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 solid. Later, it was a liquid.

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 liquid. Later, it was a gas.

Two different cars, the Model S and Model T, use different substances in their engines. The image above shows the two substances. 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.

Substance A and B are both liquid. Which will become a gas more easily if energy is added?

Substance A because its molecules will be able to move fast enough to overcome the attraction between them. Its molecules now move away from each other.

Substance B because its molecules will be able to move fast enough to overcome the attraction between them. Its molecules now move away from each other.

Substance A because the weak attraction between its molecules allowed them to move faster. Its molecules now move away from each other.

Substance B because the weak attraction between its molecules allowed them to move faster. Its molecules now move away from each other.

At room temperature, both substances are liquids. A scientist transfers the same amount of energy into both substances. One substance changes phase, but the other does not. Which chemical changed phase, and why did it change?

Substance A because its molecules will be able to move fast enough to overcome the attraction between them. Its molecules now move away from each other.

Substance B because its molecules will be able to move fast enough to overcome the attraction between them. Its molecules now move away from each other.

Substance A because the weak attraction between its molecules allowed them to move faster. Its molecules now move away from each other.

Substance B because the weak attraction between its molecules allowed them to move faster. Its molecules now move away from each other.

Phase Change: Part 3

Authored by Savannah Linhares

Science

7th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Gas --> Liquid

Particles are moving away from each other -> particles are moving around each other

Particles are moving in place -> particles are moving around each other

Particles are moving away from each other -> particles are moving in place

Particles are moving in place -> particles particles are moving in place

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Solid --> liquid

Particles are moving away from each other -> particles are moving around each other

Particles are moving in place -> particles are moving around each other

Particles are moving away from each other -> particles are moving in place

Particles are moving in place -> particles particles are moving in place

Tags

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Gas--> solid

Particles are moving away from each other -> particles are moving around each other

Particles are moving in place -> particles are moving around each other

Particles are moving away from each other -> particles are moving in place

Particles are moving in place -> particles particles are moving in place

Tags

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

You are looking at a substance that started as an ice cube but melted in to water. What happened to the molecules?

Particles are moving away from each other -> particles are moving around each other

Particles are moving in place -> particles are moving around each other

Particles are moving away from each other -> particles are moving in place

Particles are moving in place -> particles particles are moving in place

Tags

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

You are looking at a substance that started as water and evaporated into water vapor. What happened to the molecules?

Particles are moving away from each other -> particles are moving around each other

Particles are moving in place -> particles are moving around each other

Particles are moving away from each other -> particles are moving in place

Particles are moving around each other -> particles are moving away from each other

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Scientists are able to change oxygen in the gas state to oxygen as a liquid. How do they do that?

They add energy and increase the temperature

They reduce energy and decrease the temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Refrigerators are able to transfer energy out of a substance. At first, the substance is a liquid. 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 in place.

faster, and they move around each other.

faster, and they move in place.

Tags

NGSS.MS-PS1-4

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Phase Change: Part 3

Gas --> Liquid

Solid --> liquid

Gas--> solid

You are looking at a substance that started as an ice cube but melted in to water. What happened to the molecules?

You are looking at a substance that started as water and evaporated into water vapor. What happened to the molecules?

Scientists are able to change oxygen in the gas state to oxygen as a liquid. How do they do that?

Refrigerators are able to transfer energy out of a substance. At first, the substance is a liquid. 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 . . .

the way molecules in a substance move around relative to each other

a pull between two molecules that is always the same for a substance

a noticeably different form or state of the same substance

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

Phase Change: Part 3

Gas --> Liquid

Solid --> liquid

Gas--> solid

You are looking at a substance that started as an ice cube but melted in to water. What happened to the molecules?

You are looking at a substance that started as water and evaporated into water vapor. What happened to the molecules?

Scientists are able to change oxygen in the gas state to oxygen as a liquid. How do they do that?

Refrigerators are able to transfer energy out of a substance. At first, the substance is a liquid. 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 . . .

the way molecules in a substance move around relative to each other

a pull between two molecules that is always the same for a substance

a noticeably different form or state of the same substance

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

Refrigerators are able to transfer energy out of a substance. At first, the substance is a liquid. 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 . . .