Phases Of Matter

1. Which phase of matter has a definite volume and shape?

Solid

Liquid

Gas

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

Explanation

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

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

Freezing

Melting

Condensation

Boiling

3. Matter is anything that has mass and takes up space.

True

False

4. 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

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

Explanation

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

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

True

False

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

Explanation

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

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

Boiling

Melting

7. All matter melts at the same temperature.

True

False

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

Explanation

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

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

Solid

Liquid

Gas

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.

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.

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

Boiling

Condensation

Evaporation

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

Explanation

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

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

Condensation

Boiling

Sublimation

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.

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.

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

Particles speed increases

Particles speed decreases

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.

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.

12. 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

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

Explanation

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

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

Gain

Lose

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

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

14. What is the phase of matter represented in this image?

Solid

Liquid

Gas

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

Explanation

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

15. Evaporation takes place throughout the entire liquid.

True

False

Evaporation is a physical change from a LIQUID to a GAS and only occurs at the surface of the liquid.

Explanation

Evaporation is a physical change from a LIQUID to a GAS and only occurs at the surface of the liquid.

Phases Of Matter

1. Which phase of matter has a definite volume and shape?

2.

What first name or nickname would you like us to use?

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

3. Matter is anything that has mass and takes up space.

4. 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?

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

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

7. All matter melts at the same temperature.

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

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

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

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

12. 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?

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

14. What is the phase of matter represented in this image?

15. Evaporation takes place throughout the entire liquid.