Changes in States of Matter

1. Which of the following changes could most likely be reversed?

• A. an oven cooling down when it is turned off

• B. a marshmallow turning brown over a campfire

• C. pancake mix becoming solid when it is cooked

• D. a bagel being toasted

2. Which of these changes cannot be reversed?

• A. an iron cooling down when it is turned off

• B. eggs frying in a pan on the stove

• C. water freezing when placed in the freezer

• D. butter melting when left in the sun

3. Timmy pours a liquid into a container. He places it in the freezer. What will most likely happen to this liquid, and is it reversible?

• A. It will evaporate, and it is not reversible.

• B. It will become a gas, and it is not reversible.

• C. It will become a solid, and it is reversible.

• D. It will melt, and it is reversible.

Tags

NGSS.MS-PS1-4

4. Samantha is baking a cake. First, she mixes the cake batter in a bowl. Next, she adds the cake batter to a baking pan, as shown in the first picture. Then she places the baking pan in a hot oven to bake. The cake mixture begins to harden after being heated, as shown in the second picture. After the cake cools down, Samantha moves it to the table.

Which of the following changes cannot be reversed?

• A. The cake is moved to the table.

• B. The cake becomes solid.

• C. The oven becomes hot.

• D. The oven cools down.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

5. A teacher places water in a pot. The pot of water is then placed on a hot stove until it boils. What happens to the water as it boils?

• A. It freezes.

• B. It becomes a solid.

• C. It becomes a gas.

• D. It condenses.

Tags

NGSS.MS-PS1-4

6. During an investigation, a piece of paper is burned and turns into ash. Which of the following can be concluded from this investigation?

• A. Cooling objects after heating always reverses the change.

• B. Some objects cannot be changed by heating.

• C. Some changes caused by heating cannot be reversed.

• D. Heating only causes changes that can be reversed.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

7. The picture below shows water in three different states.

Which of the following statements is most likely true?

• A. After water has gone through one phase change, it cannot go through another change.

• B. Water can change from a solid to a liquid, and back again.

• C. All of the properties of water are the same no matter what phase the water is in.

• D. After the water goes through a phase change, it is no longer water.

Tags

NGSS.MS-PS1-4

8. Students investigate what happens when different materials are cooled and heated. They measure equal amounts of water, salt, vegetable oil, and butter. The students record their observations before and during the investigation in a table. Which conclusion can the students most likely draw from the investigation?

• A. Heating and cooling only change the properties of liquids.

• B. Heating and cooling have the same effects on all materials.

• C. Heating and cooling never affect the state of matter of solids.

• D. Heating and cooling affect different materials in different ways.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

9. Which of the following best shows a change that can be reversed?

• A. heating water → steam

• B. soaking metal nails in water → rust

• C. baking cookie dough → cookies

• D. burning logs in a campfire → ashes