When the liquid methane lake evaporated...

the kinetic energy increased and the molecules moved further apart.

the kinetic energy decreased and the molecules moved further apart.

the kinetic energy increased and the phase changed to solid methane.

the kinetic energy decreased and the phase change that occurred was melting.

In our Amplify story, the methane lake did not evaporate right away because...

the methane has high molecular attraction, so it took a lot of energy from the Sun to overcome the M.A.

evaporation always takes a long time to occur.

the kinetic energy from the Sun quickly overcame the molecular attraction in the methane.

the lake was in winter up until 2007, so it could not get enough energy from the Sun to vaporize.

There is a safe chemical and a toxic chemical, and both are liquids at room temperature. When the same amount of energy is transferred out of the two chemicals, only the toxic chemical changes phase. How is the toxic chemical different from the safe chemical? The toxic chemical has a . . .

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.

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

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

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

The cleaning chemical has a . . .

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.

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

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

Before the student left, the molecules were moving in place . After, the molecules were moving around each other

Before the student left, the molecules were moving around each other . After, the molecules were moving away from each other

Before the student left, the molecules were moving around each other . After, the molecules were moving in place .

Before the student left, the molecules were moving away from each other . After, the molecules were moving around each other.

Lily 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 Lily’s substance if she transfers energy into the substance and causes a phase change? After the phase change, the substance's molecules will move . . .

faster, and the substance will be a gas.

faster, and the substance will be a liquid.

slower, and the substance will be a solid.

slower, and the substance will be a liquid.

Divers found two substances at the bottom of the ocean. At room temperature, both substances are liquid. Scientists then transferred the same amount of energy out of both substances. When a scientist checked again, Substance 1 had changed phase, but Substance 2 had not. How are Substances 1 and 2 different? Substance 1 has a . . .

stronger attraction between its molecules than Substance 2. Its molecules now move in place.

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

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

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

The fuel tank of an airplane has a device that measures the fuel’s temperature. Before the airplane took off, the temperature of the fuel was 27°C. After the airplane had been flying for one hour, the temperature of the fuel had decreased to 3°C. Which of the following must have happened to the molecules of the fuel?

The molecules started moving slower.

The molecules got farther apart.

The fuel gained cold molecules.

The molecules became smaller in size.

Jamil’s bicycle is made of aluminum. When are the aluminum molecules in his bicycle moving? The aluminum molecules are . . .

only moving when Jamil is riding his bicycle.

only moving when Jamil is not riding his bicycle.

Amplify Science Unit 3 Chapter 3

Quiz

•

Science

•

7th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-4, MS-PS3-4, MS-PS3-5

+1

Standards-aligned

Charles Martinez

Used 2+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which phase change occurs when a solid turns to a liquid?

Melting

Condensing

Vaporizing

Freezing

Tags

NGSS.MS-PS1-4

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which phase change occurs when a liquid turns to a gas?

Melting

Condensing

Evaporating

Freezing

Tags

NGSS.MS-PS1-4

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

You are relaxing on some grass when you notice LIQUID water droplets have begun to seemingly disappear off the grass leaves. Which answer BEST explains what PHASE CHANGE has occurred AND how the molecule ARRANGEMENT has changed?

The PHASE CHANGE that has occurred is EVAPORATION and the molecule ARRANGEMENT has become FARTHER APART.

The PHASE CHANGE that has occurred is FREEZING and the molecule ARRANGEMENT has become CLOSER.

The PHASE CHANGE that has occurred is MELTING and the molecule MOVEMENT has become FASTER.

Tags

NGSS.MS-PS1-4

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

7. All phase changes (changing states) requires energy to be added or taken away.

True

False

Tags

NGSS.MS-PS1-4

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What happens to particles when they are heated?

They speed up and spread out

They slow down and compress

They stop moving

They move closer together and speed up

Tags

NGSS.MS-PS1-4

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the average kinetic energy of a substance called?

volume

temperature

pressure

movement

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

When a substance melts, the kinetic energy _____________.

decreases

stays the same

increases

decreases then increases

Tags

NGSS.MS-PS1-4

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Amplify Science Unit 3 Chapter 3

20 questions

Which phase change occurs when a solid turns to a liquid?

Which phase change occurs when a liquid turns to a gas?

You are relaxing on some grass when you notice LIQUID water droplets have begun to seemingly disappear off the grass leaves. Which answer BEST explains what PHASE CHANGE has occurred AND how the molecule ARRANGEMENT has changed?

7. All phase changes (changing states) requires energy to be added or taken away.

What happens to particles when they are heated?

What is the average kinetic energy of a substance called?

When a substance melts, the kinetic energy _____________.

When molecules move slower, kinetic energy

Are there molecules moving in a solid?

In our Amplify story, the liquid methane lake...

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