A group of atoms joined together in a particular way.

A group of parasites organized inside of atoms.

Tiny structures that are living inside of phase changes.

pieces of matter that consistently change phase inside objects in irregular patterns.

Which of the following describes a solid?

keeps its shape because molecules only move in place, not around each other.

molecules can move around each other, but not away from each other. Changes shape with container.

no visible shape because molecules can move away from each other.

molecules can flow freely inside of the container but not beyond that

Which of the following describes a liquid?

molecules can move around each other, but not away from each other. Changes shape with container.

keeps its shape because molecules only move in place, not around each other.

no visible shape because molecules can move away from each other.

molecules can flow freely inside of the container but not beyond that

Which of the following describes a gas?

no visible shape because molecules can move away from each other.

molecules can move around each other, but not away from each other. Changes shape with container.

keeps its shape because molecules only move in place, not around each other.

molecules can flow freely inside of the container but not beyond that

A car mechanic had a sealed bucket containing a substance in the gas phase. She left the bucket outside over the weekend. When she returned, the substance had changed phase, and the substance was in the liquid phase. What happened to the molecules of this substance?

Before the mechanic left, the molecules were moving away from each other . When she returned, they were moving around each other .

Before the mechanic left, the molecules were moving around each other . When she returned, they were moving in place .

Before the mechanic left, the molecules were moving around each other . When she returned, they were moving away from each other .

Before the mechanic left, the molecules were moving in place . When she returned, they were moving around each other .

A chef finds a sealed container consisting of an ingredient that goes into his restaurant’s secret sauce. The ingredient’s molecules are moving in place. What will happen if the chef 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 liquid.

faster, and the ingredient will be a solid.

slower, and the ingredient will be a solid.

slower, and the ingredient will be a liquid.

Workers find two substances. One is a toxic chemical. The other is a safe chemical. Both chemicals are liquids at room temperature. As a test, the workers transfer 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?

stronger 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 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.

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.

A company 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 . . .

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

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 in place.

The image above shows information about two different substances in sealed containers. 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 changed phase because its molecules were able to move fast enough to overcome the attraction between them. It is now a gas.

Substance A changed phase because the weak attraction between its molecules allowed them move faster. It is now a gas.

Substance B changed phase because the molecules were able to move fast enough to overcome the attraction between them. It is now a gas.

Substance B changed phase because the strong attraction between molecules made their movement slower. It is now a solid.

A student left a jar of water outside his home. Water can be a solid, liquid, or gas. When he put the jar outside, the water was liquid. Twelve hours later, the water had changed phase and was a gas. What happened to the water molecules?

When the student left the jar outside, the molecules were moving around each other . Later, the molecules were moving away from each other .

When the student left the jar outside, the molecules were moving around each other . Later, the molecules were moving in place .

When the student left the jar outside, the molecules were moving away from each other. Later, the molecules were moving around each other .

When the student left the jar outsid e , the molecules were moving in place . Later, the molecules were moving around each other .

Detectives find 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 detectives transfer 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 away from each other.

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

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.

A substance's molecules are moving around each other. What will happen if you transfer energy into the substance and cause a phase change?

molecules will move faster, substance will be a gas

molecules will move slower, substance will be a solid

molecules will move slower, substance will be a liquid

molecules will move faster, substance will be a liquid

You have two substances at room temperature. Both substances are a liquid. You transfer the same amount of energy out of both substances but only one substance changes phase. What happened?

the substance with the stronger attraction will turn to a solid

the substance with the weaker attraction will change to a gas

the substance with the stronger attraction will turn to a gas

the substance with the weaker attraction will turn to a solid

a phase change occurs when the kinetic energy decreases enough.....

so that the attraction between molecules pulls them together

to overcome the attraction between molecules

Matter and Change Amplify Phase Change

Authored by Charles Martinez

Science

6th - 8th Grade

NGSS covered

Used 1+ times

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35 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If a substance has molecules moving in place, undergoes a phase change, and now has molecules moving around each other it has changed from a.......

solid to a gas

gas to a liquid

solid to liquid

liquid to a solid

Tags

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If you have a container full of ice and you add enough kinetic energy to create a phase change it is now a...

solid

liquid

gas

plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If you add kinetic energy to a substance are you increasing or decreasing the freedom of movement of the molecules?

increasing

decreasing

Tags

NGSS.MS-PS1-4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Blake is doing a science experiment with a substance in a sealed jar. At first, the substance’s molecules are moving around each other. What will happen to Blake’s substance if he transfers energy out of the substance and causes a phase change? After the phase change, the substance’s molecules will move . ..

faster and be a gas

faster and be a liquid

slower and be a liquid

slower and be a solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Owen found two different substances when he was locked in the basement. Substance 1 and 2 were both liquids at room temperature. He was bored so he took away the same amount of kinetic energy out of both substances, but only substance 1 changed phase. How are the substances different?

Substance 1 has a weaker attraction between its molecules than Substance 2. Its molecules now move in place.

Substance 1 has a weaker attraction between its molecules than Substance 2. Its molecules now move around each other.

Substance 1 has a stronger attraction between its molecules than substance 2. Its molecules now move away from each other.

Substance 1 has a stronger attraction between its molecules than substance 2. Its molecules now move in place.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Cohen had a Popsicle but left it out and it started to melt. What caused the Popsicle to melt?

kinetic energy was taken away from the Popsicle

kinetic energy was added to the Popsicle

Cohen doesn't deserve treats if he is going to waste them

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Substance A has a strong attraction between its molecules and substance B has a weak attraction between its molecules. They are both liquids at room temperature. If the same amount of kinetic energy is added to them which substance is more likely to change to a gas?

substance a

substance b

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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Matter and Change Amplify Phase Change

If a substance has molecules moving in place, undergoes a phase change, and now has molecules moving around each other it has changed from a.......

If you have a container full of ice and you add enough kinetic energy to create a phase change it is now a...

If you add kinetic energy to a substance are you increasing or decreasing the freedom of movement of the molecules?

Owen found two different substances when he was locked in the basement. Substance 1 and 2 were both liquids at room temperature. He was bored so he took away the same amount of kinetic energy out of both substances, but only substance 1 changed phase. How are the substances different?

Cohen had a Popsicle but left it out and it started to melt. What caused the Popsicle to melt?

Substance A has a strong attraction between its molecules and substance B has a weak attraction between its molecules. They are both liquids at room temperature. If the same amount of kinetic energy is added to them which substance is more likely to change to a gas?

Which substance has molecules that are moving?

Gas to liquid phase change

Liquid to gas phase change..

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