Phases And Phase Changes Quiz
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Do you know about the phases of matter and phase changes? If yes, take up this chemistry quiz and check your knowledge for the same. There are the three fundamental phases of matter – solids, gases (vapors), and liquids and each of them can be changed from one phase (or state) to another, such as freezing, melting, evaporation, etc. Are you well aware of every phase? Play the quiz below and evaluate yourself. Best of luck!
Questions and Answers
- 1.
The following occurs when heat energy is removed: Gas ---(A)--> Liquid ---(B)---> Solid What would be the phase changes for A and B respectfully?
- A.
Melting, Evaporating
- B.
Melting, Condensation
- C.
Condensation, Freezing
- D.
Condensation, Melting
- E.
Boiling, Freezing
Correct Answer
C. Condensation, FreezingExplanation
The given diagram shows the phase changes that occur when heat energy is removed. When heat is removed from a gas, it undergoes condensation and changes into a liquid (phase change A). Then, when more heat is removed from the liquid, it undergoes freezing and changes into a solid (phase change B). Therefore, the correct answer is condensation, freezing.Rate this question:
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- 2.
Examine the following sequence of phase changes: Solid ---> Liquid ---> Gas Would we need to add or remove heat energy?
- A.
Add heat energy
- B.
Remove heat energy
- C.
Neither
Correct Answer
A. Add heat energyExplanation
When a substance undergoes a phase change from solid to liquid to gas, heat energy needs to be added. This is because the particles in the substance gain energy and move faster as they change from a solid to a liquid and then to a gas. This increase in energy requires the addition of heat energy to facilitate the phase change.Rate this question:
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- 3.
When isopropyl alcohol was spilled over the counter top and quickly disappeared, what phase change occurred?
- A.
Evaporation
- B.
Boiling
- C.
Condensation
- D.
Sublimation
Correct Answer
A. EvaporationExplanation
When isopropyl alcohol is spilled over the counter top and quickly disappears, it indicates that a phase change of evaporation has occurred. Evaporation is the process in which a liquid turns into a gas at a temperature below its boiling point. In this case, the isopropyl alcohol molecules gained enough energy from the surroundings to escape the liquid state and become a gas, causing it to disappear rapidly.Rate this question:
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- 4.
A student noticed frost was on the ground at 6:30 a.m. but noticed it disappeared by 8:30 a.m. What phase change was responsible for turning the frost into water vapor?
- A.
Melting
- B.
Evaporation
- C.
Sublimation
- D.
Deposition
Correct Answer
C. SublimationExplanation
The phase change responsible for turning the frost into water vapor is sublimation. Sublimation occurs when a solid directly changes into a gas without going through the liquid phase. In this case, the frost on the ground transformed directly into water vapor without melting into liquid water first.Rate this question:
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- 5.
The phase change that occurs when a gas is cooled and changes into a solid is known as...
- A.
Evaporation
- B.
Condensation
- C.
Deposition
- D.
Freezing
Correct Answer
C. DepositionExplanation
Deposition is the phase change that occurs when a gas is cooled and changes directly into a solid, bypassing the liquid phase. This process involves the conversion of gas molecules into solid particles, resulting in the formation of a solid substance. Unlike freezing, which involves the transition from a liquid to a solid, deposition directly converts a gas into a solid without going through the liquid state.Rate this question:
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- 6.
Which states of matter can be compressed?
- A.
Solid
- B.
Liquid
- C.
Gas
Correct Answer
C. GasExplanation
Solid is a state of matter that has a definite shape, volume and cannot be compressed. Liquid has a no definite shape, has definite volume and cannot be compressed. Gas has no definite shape, volume and can be compressed.Rate this question:
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- 7.
A ___________ has a definite shape and a definite volume.
- A.
Solid
- B.
Liquid
- C.
Gas
- D.
Molecule
Correct Answer
A. SolidExplanation
A solid has a definite shape and a definite volume because its particles are closely packed together and have strong intermolecular forces. This arrangement prevents the particles from moving freely, resulting in a fixed shape and volume.Rate this question:
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- 8.
A ____________ has no definite shape, but a definite volume.
- A.
Solid
- B.
Liquid
- C.
Gas
- D.
Molecule
Correct Answer
B. LiquidExplanation
A liquid is a substance that does not have a definite shape, meaning it can take the shape of its container. However, it does have a definite volume, meaning it maintains a specific amount of space. Unlike a solid, which has both a definite shape and volume, or a gas, which has neither a definite shape nor volume, a liquid falls in between by having a definite volume but not a definite shape. A molecule, on the other hand, is not the correct answer as it refers to the smallest unit of a substance and does not have the properties of shape or volume.Rate this question:
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- 9.
The change in state from gas to liquid is called ____________.
- A.
Condensation
- B.
Freezing
- C.
Melting
- D.
Evaporation
Correct Answer
A. CondensationExplanation
Condensation is the correct answer because it refers to the process of a substance changing from a gaseous state to a liquid state. This occurs when the temperature of the gas decreases or when the pressure on the gas increases. During condensation, the gas molecules lose energy and come together to form liquid droplets. This can be seen, for example, when water vapor in the air cools and forms water droplets on a cold surface.Rate this question:
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- 10.
The molecules in a solid vibrate against each other.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
In a solid, the molecules are tightly packed and held together by strong forces of attraction. These forces cause the molecules to vibrate in place. This vibration is known as thermal motion and is responsible for the solid's rigidity. Therefore, the statement that the molecules in a solid vibrate against each other is true.Rate this question:
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- 11.
Check any of the following that are part of the Kinetic Theory:
- A.
All particles are in constant, random motion
- B.
There are 4 states of matter including solids, liquids, gases and plasma.
- C.
Particles are constantly colliding with each other due to their constant motion.
- D.
All matter is made of small particles like atoms and molecules.
Correct Answer(s)
A. All particles are in constant, random motion
C. Particles are constantly colliding with each other due to their constant motion.
D. All matter is made of small particles like atoms and molecules.Explanation
The Kinetic Theory states that all particles are in constant, random motion. This means that particles are constantly moving and changing direction. Additionally, particles are constantly colliding with each other due to their constant motion. This collision between particles is what gives rise to pressure in gases. Finally, the Kinetic Theory also states that all matter is made of small particles like atoms and molecules. These particles are constantly moving and interacting with each other, leading to the observable properties of matter.Rate this question:
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- 12.
In order for a liquid to change into a solid, the object must ______________ thermal energy.
- A.
Gain
- B.
Lose
- C.
Both a and b
Correct Answer
B. LoseExplanation
To change from a LIQUID to a SOLID, thermal energy is lost. Particles vibrate slower thus reducing the temperature. Liquid particles move slower and slower until they become fixed in place, becoming a solidRate this question:
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- 13.
Matter changes state when a sufficient amount of thermal energy changes.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Matter changes state when the amount of thermal energy
increases or decreases.Rate this question:
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- 14.
Matter is anything that has mass and takes up space.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Matter refers to any substance that has mass and occupies space. This definition encompasses all physical objects, including both living and non-living things. Therefore, the statement that matter is anything that has mass and takes up space is true.Rate this question:
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- 15.
Evaporation takes place throughout the entire liquid.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Evaporation is a physical change from a LIQUID to a GAS and only occurs at the surface of the liquid.Rate this question:
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- 16.
What phase change does dry ice undergo when it transforms from a solid to a gas, skipping the liquid phase entirely?
- A.
Condensation
- B.
Boiling
- C.
Sublimation
Correct Answer
C. SublimationExplanation
Sublimation is a physical change from a SOLID to a GAS. The solids do not pass through liquid phase; they immediately transform into a gas.Rate this question:
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- 17.
When you place a pot of water on the stove and heat the water up, you notice that bubbles form throughout. What phase change is the water undergoing?
- A.
Boiling
- B.
Condensation
- C.
Evaporation
Correct Answer
A. BoilingExplanation
Boiling is a physical change from a LIQUID to a GAS. It takes place throughout the liquid (surface and below).Rate this question:
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- 18.
What happens to the speed in which particles move when the change from a liquid to a solid?
- A.
Particles speed increases
- B.
Particles speed decreases
- C.
None of the above
Correct Answer
B. Particles speed decreasesExplanation
When an object changes from a liquid to a solid, the object loses thermal energy, therefore the particles begin to move slower and slower until the object changes phases.Rate this question:
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- 19.
The temperature at which matter changes from a solid to a liquid is called the _________ point.
- A.
Boiling
- B.
Melting
- C.
Freezing
Correct Answer
B. MeltingExplanation
The correct answer is "melting" because it refers to the temperature at which a substance changes its state from a solid to a liquid. This process involves the breaking of intermolecular forces holding the particles in a fixed position, allowing them to move more freely and take the shape of the container.Rate this question:
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- 20.
The beads of sweat on the outside of your cup come from the water vapor in the air. What phase change did the water vapor have to undergo to become the dew drops on the outside of your cup?
- A.
Boiling
- B.
Condensation
- C.
Sublimation
Correct Answer
B. CondensationExplanation
Condensation occurs when water vapor loses thermal energy and condenses into liquid.Rate this question:
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