States Of Matter Questions And Answers

Reviewed by Zohra Sattar Waxali
Zohra Sattar Waxali, PhD (Chemistry) |
Chemistry
Review Board Member
Dr. Zohra Sattar Waxali earned her doctorate in chemistry and biochemistry from Northwestern University, specializing in the metallomes of cardiac cells and stem cells, and their impact on biological function. Her research encompasses the development of arsenoplatin chemotherapeutics, stapled peptide estrogen receptor inhibitors, and antimicrobial natural products.
 , PhD (Chemistry)
By Cardinalcm
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Cardinalcm
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  • 1/15 Questions
    What state of matter is rain? - ProProfs

    What state of matter is rain?

    • Solid
    • Liquid
    • Gas
    • Plasma
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About This Quiz

The "States of Matter Quiz" is designed to test your knowledge of the different forms matter can take—solid, liquid, gas, and plasma. Whether you are a student brushing up for a science class or just curious about how everything around you is made, this "States of Matter Practice Test" will challenge your understanding of these fundamental concepts.

With a mix of questions and thought-provoking scenarios, the "States of Matter Questions and Answers" section will help you grasp how matter behaves under various conditions. You’ll learn about properties, changes, and the unique characteristics that define each state. From ice cubes melting into water to steam rising from a kettle, the quiz encourages you to observe the matter around you.

States Of Matter Questions And Answers - Quiz

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  • 2. 
    In which state of matter are the particles closest together? - ProProfs

    In which state of matter are the particles closest together?

    • Liquid

    • Gas

    • Plasma

    • Solid

    Correct Answer
    A. Solid
    Explanation
    In a solid, the particles are tightly packed and have strong intermolecular forces, resulting in a fixed shape and volume. In a liquid, the particles are less tightly packed and have weaker intermolecular forces, allowing them to flow and take the shape of their container. In a gas, the particles are widely spaced and have very weak intermolecular forces, causing them to move freely and fill any container they occupy. Plasma is a superheated state of matter where the particles are ionized, meaning they have lost or gained electrons.

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  • 3. 
    Which state of matter has no definite shape or volume? - ProProfs

    Which state of matter has no definite shape or volume?

    • Solid

    • Liquid

    • Gas

    • Plasma

    Correct Answer
    A. Gas
    Explanation
    Gases do not possess a definite shape or volume. Instead, they expand to fill any container they occupy, resulting in a lack of fixed boundaries. Gas particles are in constant motion, allowing them to occupy available space freely. This unique characteristic makes gases compressible and capable of expanding indefinitely.

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  • 4. 
    What state are the particles in this picture? - ProProfs

    What state are the particles in this picture?

    • Solid

    • Liquid

    • Gas

    • Plasma

    Correct Answer
    A. Plasma
    Explanation
    The picture likely depicts particles in a plasma state, characterized by highly energized and ionized particles that conduct electricity and respond to magnetic fields. Plasma is considered the fourth state of matter, differing from solids, liquids, and gases due to the unique behavior and properties of its charged particles.

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  • 5. 

    What happens to the particles of a substance when it undergoes melting?

    • The particles move closer together.

    • The particles move farther apart.

    • The particles remain in the same position.

    • The particles lose energy.

    Correct Answer
    A. The particles move farther apart.
    Explanation
    When a substance undergoes melting, it transitions from a solid state to a liquid state. During this process, the particles, which are closely packed in a solid, gain energy and begin to vibrate more vigorously. This increased energy allows the particles to overcome some of their intermolecular forces, causing them to move farther apart from one another. As a result, the solid takes on the characteristics of a liquid, including a definite volume but no definite shape, allowing it to flow and take the shape of its container.

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  • 6. 

    In the context of the phase transition from liquid to gas, which thermodynamic property remains constant during the process of boiling at a fixed pressure?

    • Temperature

    • Volume

    • Entropy

    • Enthalpy

    Correct Answer
    A. Temperature
    Explanation
    During the boiling process at a fixed pressure, the temperature of the liquid remains constant. This is because the heat energy added to the system is used to overcome the intermolecular forces and convert the liquid into a gas, rather than increasing the temperature. The specific temperature at which this occurs is known as the boiling point.

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  • 7. 

    In which state of matter do particles have the least energy and are closely packed together?

    • Solid

    • Liquid

    • Gas

    • Plasma

    Correct Answer
    A. Solid
    Explanation
    In solids, particles possess the least energy compared to other states of matter. They are arranged in a fixed, closely-packed structure, which contributes to solids having a definite shape and volume. The particles in a solid vibrate but remain in place, unable to move around freely, which is a characteristic feature of this state.

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  • 8. 
    What state of matter are the particles in this picture? - ProProfs

    What state of matter are the particles in this picture?

    • Solid

    • Liquid

    • Gas

    • Plasma

    Correct Answer
    A. Solid
    Explanation
    The picture likely represents particles in a solid state, indicated by their closely packed arrangement and fixed shape. Solids maintain a definite volume and shape due to the strong intermolecular forces that hold the particles in fixed positions, differentiating them from the more dynamic states of liquid and gas.

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  • 9. 

    How many states of matter exist?

    • 2

    • 3

    • 4

    • 5

    Correct Answer
    A. 5
    Explanation
    Matter exists in five recognized states: solid, liquid, gas, plasma, and Bose-Einstein condensates. Each state varies in terms of particle density and energy levels. Solids have tightly packed particles, liquids have more space between them, gases are spread far apart, plasma consists of ionized particles, and Bose-Einstein condensates occur at extremely low temperatures. These states demonstrate the fundamental variations in how matter can exist based on temperature and pressure conditions.

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  • 10. 
    In which state of matter are the particles farthest apart? - ProProfs

    In which state of matter are the particles farthest apart?

    • Solid

    • Liquid

    • Gas

    • Plasma

    Correct Answer
    A. Gas
    Explanation
    In the gas state, particles are significantly spaced apart due to their high energy levels, which allows them to move freely and independently. This large separation contrasts with solids, where particles are tightly packed, and liquids, where particles are closer than in gases but still possess some space for movement. Plasma consists of charged particles, but their spacing is still less than that found in gases.

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  • 11. 

     During the process of sublimation, what remains constant in an isolated system?

    • Volume

    • Pressure

    • Temperature

    • Enthalpy

    Correct Answer
    A. Temperature
    Explanation
    During sublimation in an isolated system, the temperature remains constant as the substance transitions directly from the solid phase to the gas phase. The energy supplied to the system is used to break the intermolecular forces in the solid, allowing it to convert into a gas. The temperature stays constant during this phase change, similar to the melting and boiling processes.

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  • 12. 

    When a gas undergoes adiabatic expansion, what change occurs in the gas molecules?

    • The average kinetic energy of the molecules increases.

    • The average kinetic energy of the molecules decreases.

    • The intermolecular forces become stronger.

    • The number of gas molecules increases.

    Correct Answer
    A. The average kinetic energy of the molecules decreases.
    Explanation
    In an adiabatic expansion, a gas expands without heat exchange with its surroundings. As the gas performs work on its environment, its internal energy diminishes, leading to a reduction in the average kinetic energy of the molecules. This results in a decrease in temperature, demonstrating the cooling effect that accompanies adiabatic processes.

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  • 13. 

    Which of the following statements correctly describes the critical point in a phase diagram?

    • The temperature and pressure at which a solid melts into a liquid.

    • The point at which the liquid and gas phases are indistinguishable.

    • The pressure and temperature at which a substance sublimes.

    • The temperature and pressure at which a liquid boils.

    Correct Answer
    A. The point at which the liquid and gas phases are indistinguishable.
    Explanation
    The critical point in a phase diagram represents the temperature and pressure at which the properties of the liquid and gas phases of a substance become identical, resulting in a single supercritical fluid phase. At this point, the distinct boundary between liquid and gas phases disappears, and the substance exhibits unique properties.

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  • 14. 
    Of solids, liquids, and gases, which phase of matter has the most kinetic energy? - ProProfs

    Of solids, liquids, and gases, which phase of matter has the most kinetic energy?

    • Solid

    • Liquid

    • Gas

    • None of the above

    Correct Answer
    A. Gas
    Explanation
    Gases typically exhibit the highest kinetic energy among solids, liquids, and gases. This energy is linked to the motion of particles, which in gases move rapidly and freely in all directions. The constant collisions between gas particles and with container walls contribute to their high kinetic energy, surpassing that of liquids and solids.

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  • 15. 
    What state of matter is water? (Considering all temperature conditions.) - ProProfs

    What state of matter is water? (Considering all temperature conditions.)

    • Solid

    • Liquid

    • Gas

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    Water can exist in all three states of matter: solid (ice), liquid (water), and gas (steam). Its state depends on temperature and pressure conditions. At low temperatures, water freezes into a solid; at room temperature, it is a liquid; and at high temperatures, it vaporizes into gas. This versatility highlights water's unique properties.

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Zohra Sattar Waxali |PhD (Chemistry) |
Chemistry
Dr. Zohra Sattar Waxali earned her doctorate in chemistry and biochemistry from Northwestern University, specializing in the metallomes of cardiac cells and stem cells, and their impact on biological function. Her research encompasses the development of arsenoplatin chemotherapeutics, stapled peptide estrogen receptor inhibitors, and antimicrobial natural products.

Quiz Review Timeline (Updated): Mar 25, 2025 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 25, 2025
    Quiz Edited by
    ProProfs Editorial Team

    Expert Reviewed by
    Zohra Sattar Waxali
  • Oct 21, 2008
    Quiz Created by
    Cardinalcm
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