STEM 9 Practice Final
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By studying starlight, astronomers may learn
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That elements that are in the star.
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The surface temperature of the star.
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The speed at which the star is moving toward or away from Earth.
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All of the above.
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Sit back, relax and have fun with this Physical Science Practice quiz.
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- 2.
Matter is
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Any visible solid that has mass.
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Any liquid that takes up space and has mass.
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Anything that takes up space and has mass.
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Any liquid or solid that takes up space.
Correct Answer
A. Anything that takes up space and has mass.Explanation
The correct answer is "anything that takes up space and has mass." This answer is the most comprehensive and inclusive definition of matter. It encompasses all forms of matter, including both solids and liquids, and emphasizes the key characteristics of matter, which are occupying space and having mass. This definition allows for the inclusion of gases as well, which may not be visible but still possess mass and occupy space.Rate this question:
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- 3.
Which of the following would be an example of a very good conductor of heat energy?
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Liquid
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Wood
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Air
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Metal
Correct Answer
A. MetalExplanation
Metal would be an example of a very good conductor of heat energy because metals have high thermal conductivity. This means that heat can easily flow through metals due to the movement of free electrons within their atomic structure. In contrast, liquids, wood, and air have lower thermal conductivity and are not as efficient at conducting heat.Rate this question:
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- 4.
If 2 charges attract each other,
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Both charges must be positive.
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Both charges must be negative.
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The charges must be different.
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All of the above.
Correct Answer
A. The charges must be different.Explanation
If two charges attract each other, it means that they have opposite charges. Like charges (both positive or both negative) repel each other, so if they are attracting, it implies that the charges must be different.Rate this question:
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- 5.
What i the chemical formula for iron (III) oxide?
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Fe2+
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NaCl
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I2
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Fe2O3
Correct Answer
A. Fe2O3Explanation
The chemical formula for iron (III) oxide is Fe2O3. This is because iron (III) indicates that iron has a +3 charge, and oxygen has a -2 charge. To balance the charges, two iron atoms with a +3 charge each combine with three oxygen atoms with a -2 charge each, resulting in the formula Fe2O3.Rate this question:
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- 6.
Which of the following is a physical change?
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Melting ice cubes
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Burning paper
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Rusting iron
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Burning gasoline
Correct Answer
A. Melting ice cubesExplanation
Melting ice cubes is a physical change because it is a change in the state of matter from solid to liquid. The molecules in the ice cubes rearrange themselves as heat is applied, causing the ice to melt and become water. This change is reversible, as the water can be frozen again to form ice cubes.Rate this question:
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- 7.
A book is siting still on your desk. Which of the following best describes this situation?
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There are no forces acting on the book.
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The book is moving compared to the reference frame.
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There are balanced forces acting on the book.
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There are unbalanced forces acting on the book.
Correct Answer
A. There are balanced forces acting on the book.Explanation
The book is sitting still on the desk, which means it is not moving. If there were unbalanced forces acting on the book, it would be in motion. However, since the book is stationary, it suggests that there are balanced forces acting on it. Balanced forces occur when the forces pushing or pulling on an object are equal in magnitude and opposite in direction, resulting in no net force and thus no movement.Rate this question:
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- 8.
Temperature is proportional to the average kinetic energy of particles in an object. Thus an increase in temperature results in a(n)
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Increase in mass.
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Decrease in average kinetic energy.
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Increase in average kinetic energy.
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Decrease in mass.
Correct Answer
A. Increase in average kinetic energy.Explanation
An increase in temperature causes an increase in the average kinetic energy of particles in an object. This is because temperature is directly proportional to the average kinetic energy. As the temperature rises, the particles gain more energy and move faster, resulting in an increase in their average kinetic energy.Rate this question:
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- 9.
The speed of sound depends on
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The temperature of the medium.
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The density of the medium.
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How well the particles of the medium transfer energy.
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All of the above.
Correct Answer
A. All of the above.Explanation
The speed of sound depends on the temperature of the medium because sound travels faster in warmer temperatures due to increased molecular motion. The speed also depends on the density of the medium because denser materials allow sound waves to propagate more quickly. Additionally, the speed of sound is influenced by how well the particles of the medium transfer energy, as this determines how efficiently sound waves can be transmitted through the medium. Therefore, all of the given options affect the speed of sound.Rate this question:
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- 10.
Which of the following describes what happens as the temperature of a gas in a balloon increases?
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The volume of the gas increases and the speed of the particles in increases.
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The speed of the particles decreases.
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The volume decreases.
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The pressure decreases.
Correct Answer
A. The volume of the gas increases and the speed of the particles in increases.Explanation
As the temperature of a gas in a balloon increases, the volume of the gas increases. This is because at higher temperatures, the gas molecules gain more energy and move faster, causing them to spread out and occupy a larger volume. Additionally, the speed of the particles in the gas also increases. This is because the increase in temperature leads to an increase in the kinetic energy of the particles, resulting in faster movement.Rate this question:
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- 11.
Which of the following is NOT a use for radioactive isotopes?
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As tracers for diagnosing disease
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As an additive to paints to increase their durability
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As a way of treating forms of cancer
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As a way to study biochemical processes in plants
Correct Answer
A. As an additive to paints to increase their durabilityExplanation
Radioactive isotopes are commonly used in various fields, including medicine and scientific research. They are used as tracers in diagnosing diseases, as they can be easily detected and tracked within the body. Radioactive isotopes are also used in cancer treatment, as they can target and destroy cancer cells. Additionally, they are used to study biochemical processes in plants, providing insights into their growth and development. However, radioactive isotopes are not used as additives to increase the durability of paints. This is because the radioactivity could pose health and safety risks to individuals exposed to the painted surfaces.Rate this question:
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- 12.
A car travels a distance of 210 mi in exactly 4 h. The driver calculates that he has traveled 52.5 mi/h. Which of the following terms most nearly describes his calculation?
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Average speed
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Instantaneous speed
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Instantaneous acceleration
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Displacement
Correct Answer
A. Average speedExplanation
The driver's calculation of 52.5 mi/h represents the average speed because it is the total distance traveled divided by the total time taken.Rate this question:
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- 13.
__________ is defined as force acting over a distance.
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Power
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Energy
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Work
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Potential energy
Correct Answer
A. WorkExplanation
Work is defined as the force acting over a distance. In physics, work is calculated by multiplying the force applied to an object by the distance the object moves in the direction of the force. It is a measure of the energy transfer that occurs when an object is moved by a force. Work is expressed in units of joules (J) and is a scalar quantity. It is an important concept in understanding the relationship between force, distance, and energy.Rate this question:
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- 14.
The type of energy transfer that takes place between objects in direct contact is
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Conduction.
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Convection.
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Contraction.
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Radiation.
Correct Answer
A. Conduction.Explanation
Conduction is the correct answer because it refers to the transfer of heat or energy between objects that are in direct contact with each other. In this process, the heat is transferred through molecular collisions from a region of higher temperature to a region of lower temperature. Convection, on the other hand, involves the transfer of heat through the movement of fluids or gases. Contraction is not a type of energy transfer, and radiation refers to the transfer of heat through electromagnetic waves.Rate this question:
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- 15.
Most waves are caused by
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Velocity.
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Amplitude.
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A vibration.
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Earthquakes.
Correct Answer
A. A vibration.Explanation
Most waves are caused by a vibration. Waves are disturbances that transmit energy through a medium or space. In order for a wave to exist, there must be a source of vibration that creates the disturbance. This vibration can be caused by various factors such as the movement of particles, the oscillation of an object, or the vibration of a string. Therefore, the correct answer is a vibration.Rate this question:
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- 16.
The number of waves passing a given point per unit of time is called the
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Frequency.
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Wave speed.
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Wavelength.
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Amplitude.
Correct Answer
A. Frequency.Explanation
The number of waves passing a given point per unit of time is called the frequency. This is because frequency represents the rate at which the waves are occurring, indicating how many waves pass a specific point in a given time period. Wave speed refers to how fast the waves are traveling, wavelength represents the distance between two consecutive points on a wave, and amplitude refers to the height or intensity of a wave. However, in this context, the question specifically asks for the term that describes the number of waves passing a point per unit of time, which is frequency.Rate this question:
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- 17.
The combining of waves as they meet is known as
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A crest.
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Noise.
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Interference.
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The Doppler effect.
Correct Answer
A. Interference.Explanation
When waves meet, they can combine and interact with each other. This phenomenon is known as interference. Interference can result in the reinforcement or cancellation of the waves, depending on whether they are in phase or out of phase. This can create patterns of constructive or destructive interference, altering the amplitude and shape of the resulting wave. Therefore, interference is the correct term to describe the combining of waves as they meet.Rate this question:
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- 18.
Light can be modeled as a
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Electromagnetic waves.
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A stream of particles called photons.
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Rays that travel in straight lines.
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All of the above.
Correct Answer
A. All of the above.Explanation
The correct answer is "All of the above" because light can be modeled as electromagnetic waves, which is supported by the wave-particle duality theory. It can also be described as a stream of particles called photons, as demonstrated by the photoelectric effect. Additionally, light can be understood as rays that travel in straight lines, which is evident in geometric optics. Therefore, all three options accurately describe the nature of light.Rate this question:
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- 19.
Which of the quantities below represents velocity?
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25 m/s
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10 km/min
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15 mi/h eastward
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3 mi/hr
Correct Answer
A. 15 mi/h eastwardExplanation
Velocity is a vector quantity that represents the rate at which an object changes its position in a specific direction. It includes both the speed and the direction of motion. In this case, the quantity "15 mi/h eastward" represents velocity because it includes both the speed (15 mi/h) and the direction (eastward). The other quantities listed only provide the speed of the object but do not specify the direction, so they do not represent velocity.Rate this question:
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- 20.
An example of action-reaction forces is
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Air escaping from a toy balloon.
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A rocket traveling through the air.
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A ball bouncing off a wall.
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All of the above.
Correct Answer
A. All of the above.Explanation
All of the given options demonstrate action-reaction forces. In the case of air escaping from a toy balloon, the action force is the air being forced out of the balloon, and the reaction force is the balloon moving in the opposite direction. Similarly, when a rocket travels through the air, the action force is the expulsion of gases from the rocket's engines, and the reaction force is the rocket moving forward. Lastly, when a ball bounces off a wall, the action force is the ball hitting the wall, and the reaction force is the ball bouncing back in the opposite direction. Therefore, all of the options involve action-reaction forces.Rate this question:
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- 21.
Energy that involves the large-scale motion or position of objects in a system is called
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Potential energy.
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Mechanical energy.
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Nonmechanical energy.
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Conserved energy.
Correct Answer
A. Mechanical energy.Explanation
Mechanical energy refers to the energy associated with the motion or position of objects in a system. It includes both kinetic energy, which is the energy of motion, and potential energy, which is the energy stored in an object due to its position. Therefore, mechanical energy encompasses the large-scale motion or position of objects in a system, making it the correct answer.Rate this question:
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- 22.
A pattern of stars seen from Earth is a
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Galaxy.
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Nebula.
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Milky Way.
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Constellation.
Correct Answer
A. Constellation.Explanation
A pattern of stars seen from Earth is referred to as a constellation. A constellation is a group of stars that form a recognizable pattern or shape in the night sky. These patterns were named by ancient civilizations and have been used for centuries as a way to navigate and tell stories about the stars. While galaxies, nebulae, and the Milky Way are all related to stars, they do not specifically refer to the patterns seen from Earth.Rate this question:
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- 23.
Which of the following units is an SI base unit?
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Centimeter
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Kilogram
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Cubic meter
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Liter
Correct Answer
A. LiterExplanation
The liter is not an SI base unit. The SI base units are the units from which all other units are derived. The SI base units include the meter for length, the kilogram for mass, the second for time, the ampere for electric current, the kelvin for temperature, the mole for amount of substance, and the candela for luminous intensity. The liter is a unit of volume, but it is not one of the SI base units.Rate this question:
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- 24.
Materials that can flow to fit their containers include
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Gases.
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Liquids.
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Both gases and liquids.
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Neither gases or liquids.
Correct Answer
A. Both gases and liquids.Explanation
Both gases and liquids can flow to fit their containers because they are both considered fluids. Gases are able to flow and fill their containers because their particles are not held together tightly and are able to move freely. Liquids, on the other hand, have particles that are held together more closely, but they are still able to flow and take the shape of their containers due to their ability to slide past one another. Therefore, both gases and liquids have the ability to flow and adapt to the shape of their containers.Rate this question:
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- 25.
Newton's first law of motion states tat an object
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At rest remains at rest unless it experiences an unbalanced force.
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In motion maintains its velocity unless it experiences an unbalanced force.
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Will tend to maintain its motion unless it experiences an unbalanced force.
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All of the above.
Correct Answer
A. All of the above.Explanation
The correct answer is "All of the above." This is because Newton's first law of motion states that an object at rest remains at rest unless it experiences an unbalanced force, an object in motion maintains its velocity unless it experiences an unbalanced force, and an object will tend to maintain its motion unless it experiences an unbalanced force. Therefore, all three statements are true and encompass the complete explanation of Newton's first law of motion.Rate this question:
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- 26.
The Greek letter λ is often used to represent a wave's
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Period.
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Wavelength.
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Frequency.
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Amplitude.
Correct Answer
A. Wavelength.Explanation
The Greek letter λ is commonly used as a symbol to represent wavelength in physics and mathematics. Wavelength refers to the distance between two consecutive points of a wave that are in phase, such as two crests or two troughs. It is a fundamental property of a wave and is usually denoted by the symbol λ. Therefore, the correct answer is wavelength.Rate this question:
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- 27.
According to the moderns model of the atom,
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Moving electrons form an electron cloud.
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Electrons and protons circle neutrons.
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Neutrons have a positive charge.
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The number of protons an atom has varies.
Correct Answer
A. Moving electrons form an electron cloud.Explanation
According to the modern model of the atom, moving electrons form an electron cloud. This means that electrons do not orbit the nucleus in fixed paths, but rather exist in a cloud-like region around the nucleus. The electron cloud represents the probability of finding an electron at a particular location. This model is supported by quantum mechanics and explains the behavior and properties of electrons in atoms.Rate this question:
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- 28.
Which substance has ionic bonds?
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CO
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CO2
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KCl
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O2
Correct Answer
A. KClExplanation
KCl has ionic bonds. Ionic bonds occur between a metal and a nonmetal, where one atom transfers electrons to the other, resulting in the formation of ions with opposite charges. In the case of KCl, potassium (K) donates an electron to chlorine (Cl), forming K+ and Cl- ions. These ions are held together by electrostatic attraction, creating an ionic bond. On the other hand, CO and CO2 have covalent bonds, where electrons are shared between atoms, and O2 consists of a diatomic molecule held together by a double covalent bond.Rate this question:
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- 29.
In an exothermic reaction,
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Energy is conserved.
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The formation of bonds in the product releases more energy than is required to break the bonds in the reactants.
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Energy is released as bonds form.
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All of the above.
Correct Answer
A. All of the above.Explanation
In an exothermic reaction, energy is conserved because it cannot be created or destroyed, only transferred or converted. Additionally, the formation of bonds in the product releases more energy than is required to break the bonds in the reactants, resulting in a net release of energy. This energy is released as bonds form, further supporting the idea that all of the statements are correct.Rate this question:
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- 30.
The amount of energy produced during nuclear fission is related to
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The temperature in the atmosphere during nuclear fission.
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The masses of the missing nuclei and particles released.
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The volume of the nuclear reactor.
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The square of the speed of sound.
Correct Answer
A. The masses of the missing nuclei and particles released.Explanation
The amount of energy produced during nuclear fission is related to the masses of the missing nuclei and particles released. This is because during nuclear fission, a heavy nucleus is split into two smaller nuclei, releasing a large amount of energy. The mass of the missing nuclei and particles is converted into energy according to Einstein's famous equation, E=mc^2, where E is the energy, m is the mass, and c is the speed of light. Therefore, the more mass that is converted into energy, the greater the amount of energy produced during nuclear fission.Rate this question:
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- 31.
A wave is a disturbance that transmits
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Matter.
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Particles.
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Energy.
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A medium.
Correct Answer
A. Energy.Explanation
A wave is a disturbance that transfers energy. Waves do not transfer matter or particles, but rather they propagate through a medium, such as air, water, or solids, by transferring energy from one point to another. This energy can be in the form of mechanical waves, like sound waves or seismic waves, or electromagnetic waves, like light or radio waves. Therefore, the correct answer is energy.Rate this question:
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- 32.
Earth is gravitationally attracted to
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Mercury.
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The Moon.
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The Sun.
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All of the above.
Correct Answer
A. All of the above.Explanation
The correct answer is "All of the above" because Earth is gravitationally attracted to all three celestial bodies - Mercury, the Moon, and the Sun. Gravitational attraction is a force that exists between any two objects with mass, and the strength of this force depends on the mass and distance between the objects. Therefore, Earth experiences gravitational attraction towards all celestial bodies in our solar system, including Mercury, the Moon, and the Sun.Rate this question:
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- 33.
Which of the following is a homogeneous mixture?
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Tossed salad
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Soil
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Salt water
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Vegetable soup
Correct Answer
A. Salt waterExplanation
Salt water is a homogeneous mixture because it has a uniform composition throughout. In a homogeneous mixture, the different components are evenly distributed and cannot be easily distinguished. In the case of salt water, the salt particles are dissolved uniformly in the water, resulting in a solution where the salt is evenly spread out and cannot be seen or separated easily. This is in contrast to the other options given, such as tossed salad or vegetable soup, where the different components can be visually distinguished and are not evenly distributed.Rate this question:
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- 34.
Which ions does a base form in solution?
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Oxygen
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Hydronium
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Hydroxide
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Sulfur
Correct Answer
A. HydroxideExplanation
A base is a substance that accepts protons or donates pairs of electrons. In solution, a base forms hydroxide ions (OH-) by accepting a proton from water molecules. This process increases the concentration of hydroxide ions in the solution, making it basic. Therefore, the correct answer is hydroxide.Rate this question:
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- 35.
Half the vertical distance between the crest and trough of a wave is called the
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Frequency.
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Crest.
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Wavelength.
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Amplitude.
Correct Answer
A. Amplitude.Explanation
The amplitude of a wave refers to half the vertical distance between the crest and trough of the wave. It represents the maximum displacement of a particle from its equilibrium position as the wave passes through it. The greater the amplitude, the more energy the wave carries. In this case, the correct answer is amplitude.Rate this question:
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- 36.
Which statement about atoms of elements in the same group of the periodic table is true?
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They have the same number of protons.
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They have the same mass number.
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They have similar chemical properties.
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They have the same number of total electrons.
Correct Answer
A. They have similar chemical properties.Explanation
Atoms of elements in the same group of the periodic table have similar chemical properties because they have the same number of valence electrons. Valence electrons are the outermost electrons involved in chemical bonding, and they determine the reactivity and chemical behavior of an element. Since elements in the same group have the same number of valence electrons, they exhibit similar chemical properties and tend to form similar types of compounds.Rate this question:
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- 37.
A solution is _________ if it contains as much dissolved solute as it will hold under a given set of conditions.
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Saturated.
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Dilute.
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Supersaturated.
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Concentrated
Correct Answer
A. Saturated.Explanation
A solution is saturated when it cannot dissolve any more solute under the given conditions. This means that the solution is at its maximum capacity for holding the solute. Dilute refers to a solution that has a low concentration of solute, while concentrated refers to a solution that has a high concentration of solute. Supersaturated refers to a solution that has more solute dissolved than it would normally hold under the given conditions.Rate this question:
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- 38.
Which of the following is NOT accelerating?
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A ball being juggled
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A woman walking 2.5 m/s along a straight road
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A satellite circling Earth
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A braking cyclist
Correct Answer
A. A woman walking 2.5 m/s along a straight roadExplanation
The woman walking 2.5 m/s along a straight road is not accelerating. Acceleration is the rate at which an object's velocity changes over time. In this case, the woman's velocity is constant at 2.5 m/s, so there is no change in her velocity and therefore no acceleration.Rate this question:
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- 39.
Which of the following is a mixture?
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Air
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Salt
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Water
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Sulfur
Correct Answer
A. AirExplanation
Air is a mixture because it is composed of various gases such as nitrogen, oxygen, carbon dioxide, and trace amounts of other gases. These gases are not chemically combined and can be separated by physical means. Therefore, air is considered a mixture rather than a pure substance.Rate this question:
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- 40.
Compounds and elements are
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Always solids.
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Mixtures.
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Pure substances.
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Dense.
Correct Answer
A. Pure substances.Explanation
Compounds and elements are classified as pure substances because they are composed of only one type of atom or molecule. Unlike mixtures, which contain different substances that can be separated physically, pure substances have a uniform composition and cannot be separated into simpler components by physical means. While compounds and elements can exist in different states of matter, such as solids, liquids, or gases, their fundamental characteristic is that they are pure and homogeneous throughout. Therefore, pure substances is the correct answer.Rate this question:
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- 41.
During which change of state do atoms or molecules become more ordered?
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Boiling
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Condensation
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Melting
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Sublimation
Correct Answer
A. CondensationExplanation
During condensation, atoms or molecules transition from a gaseous state to a liquid state. This change of state leads to the formation of liquid droplets or solid particles, causing the particles to become more ordered and closely packed together. As the gas cools and loses energy, the random motion of the particles decreases, resulting in a more organized arrangement. Therefore, condensation is the process in which atoms or molecules become more ordered.Rate this question:
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- 42.
Which type of energy transfer can occur in empty space?
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Convection
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Contraction
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Conduction
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Radiation
Correct Answer
A. RadiationExplanation
Radiation is the correct answer because it is the only type of energy transfer that can occur in empty space. Convection requires the movement of particles, which is not possible in a vacuum. Conduction involves the transfer of heat through direct contact between objects, which is also not possible in empty space. Contraction is not a type of energy transfer. Radiation, on the other hand, is the transfer of energy through electromagnetic waves, which can propagate through empty space.Rate this question:
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- 43.
When a solution of nitric acid is added to a solution of calcium hydroxide, the salt formed has the formula
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Ca(NO3)2.
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Ca(OH)2.
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H2O
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CaH
Correct Answer
A. Ca(NO3)2.Explanation
When nitric acid (HNO3) reacts with calcium hydroxide (Ca(OH)2), a double displacement reaction occurs. The nitrate ion (NO3-) from nitric acid combines with the calcium ion (Ca2+) from calcium hydroxide to form the salt calcium nitrate (Ca(NO3)2). The other options are not correct because they do not represent the correct combination of ions formed during the reaction.Rate this question:
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- 44.
The amount of usable energy decreases when
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Systems are only used for heating.
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Systems are only used for cooling.
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Systems are used for heating and cooling.
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The heating or cooling system's design allows loss of heat energy.
Correct Answer
A. The heating or cooling system's design allows loss of heat energy.Explanation
When the heating or cooling system's design allows loss of heat energy, it means that the system is not efficient in retaining and utilizing the energy produced. This leads to a decrease in the amount of usable energy, as a significant portion of it is wasted. In contrast, when systems are only used for heating or cooling, or when they are used for both purposes, the amount of usable energy may not necessarily decrease if the system is designed to minimize energy loss.Rate this question:
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- 45.
In a controlled experiment,
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The outcome is controlled.
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Results are obtained by computer models.
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One variable is fixed while all others are changed.
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One variable is changed while all others remain fixed.
Correct Answer
A. One variable is changed while all others remain fixed.Explanation
In a controlled experiment, one variable is changed while all others remain fixed. This is done to determine the specific effect of the variable being tested on the outcome or results of the experiment. By keeping all other variables constant, researchers can isolate the impact of the variable they are interested in studying. This allows for a more accurate understanding of the relationship between the variable and the outcome, and helps to establish cause-and-effect relationships.Rate this question:
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- 46.
Which of the following statements about krypton is NOT true?
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Its molar mass is 83.79 g/mol Kr.
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Its atomic number is 36.
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One mole of krypton atoms has a mass of 41.90 g.
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It is a noble gas.
Correct Answer
A. One mole of krypton atoms has a mass of 41.90 g.Explanation
The molar mass of krypton is 83.79 g/mol Kr. The atomic number of krypton is 36, indicating that it has 36 protons in its nucleus. Krypton is a noble gas, belonging to Group 18 of the periodic table. However, one mole of krypton atoms does not have a mass of 41.90 g. The molar mass of krypton is given as 83.79 g/mol, which means that one mole of krypton atoms has a mass of 83.79 grams.Rate this question:
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- 47.
Compounds are different from mixtures because
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Compounds are held together by chemical bonds.
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Each substance in a compound maintains its own properties.
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Each original substance in a compound remains chemically unchanged.
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Mixtures are held together by chemical bonds.
Correct Answer
A. Compounds are held together by chemical bonds.Explanation
Compounds are different from mixtures because they are held together by chemical bonds. In a compound, the atoms of different elements are chemically bonded to form a new substance with unique properties. This is in contrast to mixtures, where the substances are physically mixed together but retain their individual properties and can be separated by physical means.Rate this question:
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- 48.
The majority of elements in the periodic table are
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Nonmetals.
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Conductors.
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Synthetic.
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Noble gases.
Correct Answer
A. Conductors.Explanation
The majority of elements in the periodic table are conductors. Conductors are materials that allow the flow of electric current. In the periodic table, the majority of elements are metals, and most metals are good conductors of electricity. Therefore, it can be concluded that the correct answer is conductors.Rate this question:
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- 49.
The strong nuclear force
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Attracts protons to electrons.
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Holds molecules together.
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Hold the atomic nucleus together.
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Attracts electrons to neutrons.
Correct Answer
A. Hold the atomic nucleus together.Explanation
The strong nuclear force is responsible for holding the atomic nucleus together. This force is extremely powerful and overcomes the electrostatic repulsion between positively charged protons in the nucleus. It acts between protons and neutrons, keeping them bound together and forming a stable nucleus. Without the strong nuclear force, the nucleus would not be able to stay intact, leading to the disintegration of atoms.Rate this question:
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