Unit 2 Phase Changes Quiz Review

Ashley finds a sealed container consisting of an ingredient that goes into her family’s secret sauce. The ingredient’s molecules are moving in place. What will happen if Ashley causes the ingredient to change phase by transferring energy into it?

After the phase change, the ingredient’s molecules will move . . .

• faster, and the ingredient will be a solid.

• faster, and the ingredient will be a liquid.

• slower, and the ingredient will be a solid.

• slower, and the ingredient will be a liquid.

Tags

NGSS.MS-PS1-4

Detective Jasira finds two substances at a crime scene. One is a poison, and the other is a cleaning chemical. At room temperature, both substances are liquids. To test the substances, the detective transfers the same amount of energy into both substances, but only the cleaning chemical changes phase. How is the cleaning chemical different from the poison? The cleaning chemical has a . . .

• weaker attraction between its molecules than the poison. Its molecules now move in place.

• weaker attraction between its molecules than the poison. Its molecules now move away from each other.

• stronger attraction between its molecules than the poison. Its molecules now move away from each other.

• stronger attraction between its molecules than the poison. Its molecules now move around each other.

Tags

NGSS.MS-PS1-4

Ms. Ragnauth has a container of water. Water can be a solid, liquid, or gas. At first, the water molecules in the container were moving around each other. Later, the water molecules were moving in place. What change did Ms. Ragnauth observe?

• At first, the water was a gas. After, it was a liquid.

• At first, the water was a solid. After, it was a liquid.

• At first, the water was a liquid. After, it was a gas.

• At first, the water was a liquid. After, it was a solid.

Tags

NGSS.MS-PS1-4

Miguel brought an unknown substance to the lab. The substance was in the gas phase, and was put into a sealed tank as. He slowed down the molecules inside the tank and the substance changed phase. How did he do this, and how did it affect the molecules? He transferred energy . . .

• into the substance, and the molecules moved around each other.

• into the substance, and the molecules moved away from each other

• out of the substance, and the molecules moved around each other

• out of the substance, and the molecules moved in place.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

NGSS.MS-PS3-4

Two different cars use different substances in their engines. At room temperature, both substances are liquids. A car mechanic transferred the same amount of energy out of the two containers, but only one substance changed phase. Which car’s substance changed phase, and how did it change?

• The Model T’s substance changed phase because the attraction of the molecules was able to overcome their slower movement. Its molecules now move in place.

• The Model T’s substance changed phase because the strong attraction between the molecules made their movement slower. Its molecules now move in place.

•  The Model S’s substance changed phase because the weak attraction between the molecules allowed them to move faster. Its molecules now move around each other.

• The Model S’s substance changed phase because the attraction was able to overcome the slower molecules. Its molecules now move away from each other.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

NGSS.MS-PS1-2

Refrigerators are able to transfer energy out of a substance. At first, the substance is a gas. The refrigerator changes the phase of the substance by transferring energy out of it. How does this change affect the substance’s molecules? After the phase change, the molecules move . . .

• slower, and they move away from each other.

• slower, and they move around each other.

• faster, and they move around each other.

• faster, and they move in place.

Tags

NGSS.MS-PS1-4

MS 379 uses a substance that is a solid under normal conditions. This substance will be used in extreme conditions, which could make the substance’s molecules move faster and cause a phase change. How would this phase change occur, and how would the molecules of the substance be affected under these extreme conditions? Energy would be transferred . . .

• out of the substance, and its molecules would move away from each other.

• out of the substance, and its molecules would move around each other.

• into the substance, and its molecules would move around each other.

• into the substance, and its molecules would move in place.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Cesar and Ming were investigating a see-through container of water. Water can be a solid, liquid, or gas. At first, Cesar and Ming said the water molecules were moving in place. Later, the water molecules were moving around each other. What change did they observe to the water?

•  At first, the water was a gas. Later, it was a liquid.

• At first, the water was a liquid. Later, it was a solid.

•  At first, the water was a solid. Later, it was a liquid.

• At first, the water was a liquid. Later, it was a gas.

Tags

NGSS.MS-PS1-4

Mr. Delli Gatti had a sealed bucket containing a substance in the gas phase. He left the bucket outside over the weekend. When he returned, the substance had changed phase, and the substance was in the liquid phase. What happened to the molecules of this substance?

• Before Mr. Delli Gatti left, the molecules were moving away from each other. When he returned, they were moving around each other

•  Before Mr. Delli Gatti left, the molecules were moving around each other. When he returned, they were moving in place.

• Before Mr. Delli Gatti left, the molecules were moving around each other. When he returned, they were moving away from each other.

• Before Mr. Delli Gatti left, the molecules were moving in place. When he returned, they were moving around each other.

Tags

NGSS.MS-PS1-4

J-Rod found two substances. One is a toxic chemical. The other is a safe chemical. Both chemicals are liquids at room temperature. As a test, J-Rod transfers the same amount of energy out of the two containers and find that only the toxic chemical changes phase. How is the toxic chemical different from the safe chemical? The toxic chemical has a . . .

• weaker attraction between its molecules than the safe chemical. Its molecules now move in place.

• weaker attraction between its molecules than the safe chemical. Its molecules now move around each other

• stronger attraction between its molecules than the safe chemical. Its molecules now move away from each other.

• stronger attraction between its molecules than the safe chemical. Its molecules now move in place.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4