Phases Of Matter

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Read through each question thoroughly and choose the best answer. You will have 1 hour to complete the 15 question multiple choice, true and false test.

Questions and Answers

1.

What is the phase of matter represented in this image?
- A.
  
  Solid
- B.
  
  Liquid
- C.
  
  Gas
Correct Answer
C. Gas

Explanation
Gases do not have a definite shape or volume. The particles are free to move to fill the container they are in.

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2.

In which phase of matter, are the particles able to move freely about each other but do not have a definite shape?
- A.
  
  Solid
- B.
  
  Liquid
- C.
  
  Gas
Correct Answer
B. Liquid

Explanation
Liquids have a definite volume but they do NOT have a definite shape. The molecules take shape of the container they are in. The molecules move by sliding past each other freely.

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3.

Which phase of matter has a definite volume and shape?
- A.
  
  Solid
- B.
  
  Liquid
- C.
  
  Gas
Correct Answer
A. Solid

Explanation
Solid particles are packed close together giving them a fixed shape and a definite volume.

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4.

On a hot sunny day, ice cream will transform from a solid to a liquid. What phase change did the ice cream experience?
- A.
  
  Freezing
- B.
  
  Melting
- C.
  
  Condensation
- D.
  
  Boiling
Correct Answer
B. Melting
5.

In order for a liquid to change into a solid, the object must ______________ thermal energy.
- A.
  
  Gain
- B.
  
  Lose
Correct Answer
B. Lose

Explanation
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 solid

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6.

Matter changes state when a sufficient amount of thermal energy changes.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Matter changes state when the amount of thermal energy
increases or decreases.

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7.

Matter is anything that has mass and takes up space.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
8.

Evaporation takes place throughout the entire liquid.
- A.
  
  True
- B.
  
  False
Correct Answer
B. 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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9.

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. 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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10.

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. 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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11.

All matter melts at the same temperature.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The temperature at which matter melts is called the melting point. All matter has a unique melting point.

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12.

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
Correct Answer
B. 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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13.

The temperature at which matter changes from a solid to a liquid is called the _________ point.
- A.
  
  Boiling
- B.
  
  Melting
Correct Answer
B. Melting
14.

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. Condensation

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

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15.

What phase change will the surface water on a mud puddle undergo on a hot day?
- A.
  
  Boiling
- B.
  
  Condensation
- C.
  
  Evaporation
Correct Answer
C. Evaporation

Explanation
Evaporation is a phase change from a liquid to a gas which takes place on the surface of the liquid.

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Current Version
Mar 20, 2022

Quiz Edited by
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Jun 16, 2010

Quiz Created by
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Phases Of Matter

What is the phase of matter represented in this image?

In which phase of matter, are the particles able to move freely about each other but do not have a definite shape?

Which phase of matter has a definite volume and shape?

On a hot sunny day, ice cream will transform from a solid to a liquid. What phase change did the ice cream experience?

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

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

Matter is anything that has mass and takes up space.

Evaporation takes place throughout the entire liquid.

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

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?

All matter melts at the same temperature.

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

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

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?

What phase change will the surface water on a mud puddle undergo on a hot day?