Phases And Phase Changes Quiz

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 Roshni Walia
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Roshni Walia
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  • 1/20 Questions

    Matter is anything that has mass and takes up space.

    • True
    • False
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About This Quiz

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!

Phases And Phase Changes Quiz - Quiz

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  • 2. 

    A ___________ has a definite shape and a definite volume.

    • Solid

    • Liquid

    • Gas

    • Molecule

    Correct Answer
    A. Solid
    Explanation
    A solid is a state of matter that has a definite shape and volume. The molecules in a solid are closely packed together and have a fixed arrangement. This gives solids their rigidity and resistance to changes in shape.

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  • 3. 

    Matter changes state when a sufficient amount of thermal energy changes.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Matter changes state when the amount of thermal energy
    increases or decreases.

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  • 4. 

    A ____________ has no definite shape, but a definite volume.

    • Solid

    • Liquid

    • Gas

    • Molecule

    Correct Answer
    A. Liquid
    Explanation
    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.

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  • 5. 

    The change in state from gas to liquid is called ____________.

    • Condensation

    • Freezing

    • Melting

    • Evaporation

    Correct Answer
    A. Condensation
    Explanation
    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.

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  • 6. 

    The temperature at which matter changes from a solid to a liquid is called the _________ point.

    • Boiling

    • Melting

    • Freezing

    Correct Answer
    A. Melting
    Explanation
    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.

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  • 7. 

    The molecules in a solid vibrate against each other.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    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.

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  • 8. 

    What phase change does dry ice undergo when it transforms from a solid to a gas, skipping the liquid phase entirely?

    • Condensation

    • Boiling

    • Sublimation

    Correct Answer
    A. Sublimation
    Explanation
    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.

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  • 9. 

    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?

    • Boiling

    • Condensation

    • Sublimation

    Correct Answer
    A. Condensation
    Explanation
    Condensation occurs when water vapor loses thermal energy and condenses into liquid.

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  • 10. 

    Examine the following sequence of phase changes: Solid --->  Liquid --->  Gas   Would we need to add or remove heat energy?

    • Add heat energy

    • Remove heat energy

    • Neither

    Correct Answer
    A. Add heat energy
    Explanation
    In the sequence of phase changes from solid to liquid to gas, heat energy must be added at each step. Adding heat energy causes a solid to melt into a liquid, and further adding heat causes the liquid to evaporate or vaporize into a gas. These processes require the absorption of heat to overcome the intermolecular forces holding the particles together in the solid and liquid states.

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  • 11. 

    When isopropyl alcohol was spilled over the counter top and quickly disappeared, what phase change occurred?

    • Evaporation

    • Boiling

    • Condensation

    • Sublimation

    Correct Answer
    A. Evaporation
    Explanation
    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.

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  • 12. 

    The following occurs when heat energy is removed:   Gas ---(A)-->    Liquid  ---(B)--->    Solid   What would be the phase changes for A and B respectfully?

    • Melting, Evaporating

    • Melting, Condensation

    • Condensation, Freezing

    • Condensation, Melting

    • Boiling, Freezing

    Correct Answer
    A. Condensation, Freezing
    Explanation
    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.

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  • 13. 

    What happens to the speed in which particles move when the change from a liquid to a solid?

    • Particles speed increases

    • Particles speed decreases

    • None of the above

    Correct Answer
    A. Particles speed decreases
    Explanation
    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.

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  • 14. 

    In order for a liquid to change into a solid, the object must ______________ thermal energy.

    • Gain

    • Lose

    • Both a and b

    Correct Answer
    A. Lose
    Explanation
    When a liquid loses thermal energy, its temperature decreases, causing the particles to move more slowly and come closer together. This process eventually leads to solidification or freezing, where the liquid turns into a solid state. This loss of thermal energy is essential for the phase transition from liquid to solid.

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  • 15. 

    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?

    • Boiling

    • Condensation

    • Evaporation

    Correct Answer
    A. Boiling
    Explanation
    Boiling is a physical change from a LIQUID to a GAS. It takes place throughout the liquid (surface and below).

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  • 16. 

    The phase change that occurs when a gas is cooled and changes into a solid is known as...

    • Evaporation

    • Condensation

    • Deposition

    • Freezing

    Correct Answer
    A. Deposition
    Explanation
    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.

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  • 17. 

    Which states of matter can be compressed?

    • Solid

    • Liquid

    • Gas

    Correct Answer
    A. Gas
    Explanation
    Of the three primary states of matter—solid, liquid, and gas—gas is the only state that can be significantly compressed. Gases consist of widely spaced particles that move freely, allowing them to be compressed into smaller volumes. This characteristic makes gases ideal for use in applications like pressurized cylinders, airbags, and compressed air systems.

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  • 18. 

    Evaporation takes place throughout the entire liquid.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Evaporation is a physical change from a LIQUID to a GAS and only occurs at the surface of the liquid.

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  • 19. 

    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?

    • Melting

    • Evaporation

    • Sublimation

    • Deposition

    Correct Answer
    A. Sublimation
    Explanation
    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.

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  • 20. 

    Check any of the following that are part of the Kinetic Theory: 

    • All particles are in constant, random motion

    • There are 4 states of matter including solids, liquids, gases and plasma.

    • Particles are constantly colliding with each other due to their constant motion.

    • All matter is made of small particles like atoms and molecules.

    Correct Answer(s)
    A. All particles are in constant, random motion
    A. Particles are constantly colliding with each other due to their constant motion.
    A. 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.

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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.

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  • Current Version
  • Nov 24, 2024
    Quiz Edited by
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    Expert Reviewed by
    Zohra Sattar Waxali
  • Oct 08, 2015
    Quiz Created by
    Roshni Walia
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