Quiz about Phase Change Unit Review

Question 1

The molecules in a solid

Accepted Answer

move in place

Answer

move around each other

Answer

move away from each other

Question 2

A liquid substance will

Accepted Answer

stay at the bottom of a container

Accepted Answer

take the shape of a container

Answer

expand and fill a container

Answer

keep its own shape in a container

Question 3

What is the energy that an object has because it is moving?

Accepted Answer

kinetic

Answer

potential

Answer

electric

Answer

wind

Question 4

What happens to molecules when their kinetic energy decreases?

Accepted Answer

They move slower.

Answer

They move faster.

Answer

They get heavier.

Answer

It depends on the type of molecules.

Question 5

What takes place when a liquid changes to a gas?

Accepted Answer

evaporation

Answer

condensation

Answer

melting

Answer

freezing

Question 6

When a substance melts, the kinetic energy _____________.

Accepted Answer

increases

Answer

decreases

Answer

stays the same

Answer

decreases then increases

Question 7

What takes place when a gas changes to a liquid?

Accepted Answer

condensation

Answer

melting

Answer

freezing

Answer

evaporation

Question 8

What is the average kinetic energy of a substance called?

Accepted Answer

temperature

Answer

volume

Answer

pressure

Answer

movement

Question 9

When are the molecules in a substance moving?

Accepted Answer

They are always moving

Answer

Only when the substance itself is moving

Answer

They are never moving

Answer

When you shake the substance

Question 10

All phase changes requires energy to be added or taken away.

Accepted Answer

True

Answer

False

Question 11

If an object has molecules that are moving very quickly, the object 's temperature is probably _____.

Accepted Answer

hot

Answer

cold

Answer

slow

Answer

big

Question 12

Substance B has a low molecular attraction. Substance C has a high molecular attraction. Which substance will require less energy to go from liquid to gas phase?

Accepted Answer

Substance B

Answer

Substance C

Question 13

The concept that deals with the way molecules in a substance move around relative to each other is called:

Accepted Answer

Freedom of Movement

Answer

Molecular Attraction

Answer

Kinetic Energy

Answer

Temperature

Question 14

When the molecules that make up a substance experience a change to their freedom of movement it's called a....

Accepted Answer

phase change

Answer

matter cycle

Answer

molecular change

Answer

fixed shape

Question 15

The molecular attraction of a substance can change.

Accepted Answer

False

Answer

True

Question 16

A substance with high molecular attraction will require _______ energy for its molecules to move apart than a substance with a low molecular attraction.

Accepted Answer

more

Answer

less

Question 17

Transferring energy into a substance _____________ its molecules' kinetic energy which ___________ the substance's temperature.

Accepted Answer

increases, increases

Answer

decreases, increases

Answer

increases, decreases

Answer

decreases, decreases

Question 18

What is a group of atoms joined together called?

Accepted Answer

molecule

Answer

an atom

Answer

matter

Answer

compound

Question 19

Shirley left her glass of ice water out on the counter. As the ice melted, energy transferred from the ___________ to the _________ which caused the ice to change phase.

Accepted Answer

water, ice

Answer

ice, water

Question 20

The stronger the molecular attraction: the _________ energy is needed to bring molecules closer together

Accepted Answer

less

Answer

more

Question 21

What happens to molecules when their kinetic energy decreases?

Accepted Answer

They move slower

Answer

They get heavier

Answer

They get brighter

Answer

The move faster

Question 22

Substance X had molecules that we moving around each other. After a phase change, the molecules were moving in place. What took place?

Accepted Answer

freezing

Answer

condensation

Answer

melting

Question 23

Substance Y experienced a decrease to it's molecular freedom of movement, which resulted in a(n) _________ in temperature.

Accepted Answer

decrease

Answer

increase

Question 24

When a substance undergoes a phase change, it experiences a change to its:

Accepted Answer

temperature

Accepted Answer

kinetic energy

Accepted Answer

appearance

Accepted Answer

freedom of movement

Answer

smell

Question 25

I am running a science experiment and I want the molecules in my sample to slow down. I should:

Accepted Answer

cool the sample

Answer

heat the sample

Answer

mix the sample with water

Question 26

If the molecules in a substance are moving in place and enough energy is transferred into the substance to change phase

Accepted Answer

then the molecules will move faster, and it will be a liquid

Answer

then the molecules will move slower, and it will be a solid

Answer

then the molecules will move faster, and it will be a solid

Answer

then the molecules will move slower, and it will be a liquid

Question 27

If enough energy is taken out of a substance and the substance changed into a liquid, then

Accepted Answer

the substance started as a gas

Answer

the substance started as a solid

Answer

the substance started as a liquid

Question 28

Two liquid chemical samples are heated over a flame and have the same amount of energy transferred into them. Sample 1 evaporates after 10 minutes and Sample 2 evaporates after 25 minutes. Which is true:

Accepted Answer

Sample 1 has a weaker molecular attraction than Sample 2

Answer

Sample 1 has a stronger molecular attraction than Sample 2

Answer

Sample 1 and Sample 2 have the same molecular attraction

Question 29

The molecular attraction of a substance depends on the kinetic energy of its molecules

Accepted Answer

False

Answer

True

Question 30

As molecular kinetic energy increases, temperature decreases.

Accepted Answer

False

Answer

True

Question 31

It is possible to transfer energy out of a gas and it still remain a gas?

Accepted Answer

Yes

Answer

No

Answer

What?

Question 32

The freedom of movement of molecules has to do with how freely the molecules move around relative to each other.

Accepted Answer

True

Answer

False

Question 33

A substance's molecular attraction is the same when the substance is a solid, liquid, and a gas.

Accepted Answer

True

Answer

False

Question 34

When you first take ice cream out of the freezer, its molecules are moving in place. After you leave the ice cream out on the counter for a long time, they change phase. How are the molecules moving now?

Accepted Answer

The molecules are moving around each other

Answer

The molecules are still moving in place

Answer

The molecules are moving far away from each other

Question 35

In a solid candle, the molecules are moving in place. When you melt the candle wax, the molecules start to move around each other. The freedom of movement in these molecules

Accepted Answer

increased

Answer

decreased

Answer

stayed the same

Question 36

All molecules have energy, no matter what phase they are in.

Accepted Answer

True

Answer

False

Question 37

Changing the kinetic energy of a substance changes its temperature.

Accepted Answer

True

Answer

False

Question 38

If a substance's boiling point is higher than the temperature of the room it is in, then the substance could be in what phase(s)?

Accepted Answer

Solid

Accepted Answer

Liquid

Answer

Gas

Question 39

A substance was heated up and it evaporated. The molecules in this sample experienced:

Accepted Answer

an increase in kinetic energy

Accepted Answer

an increase in freedom of movement

Answer

a decrease in temperature

Answer

a decrease in freedom of movement

Answer

a decrease in molecular attraction

Question 40

The molecules in a gas

Accepted Answer

move away from each other

Answer

move in place

Answer

move around each other

Question 41

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

Accepted Answer

Molecular Attraction

Answer

Kinetic Energy

Answer

Molecule

Answer

Mixture

Question 42

A substance in the gas phase

Accepted Answer

will fill a container

Accepted Answer

will take the shape of its container

Answer

will stay at the bottom of a container

Answer

will have its own definite shape

Question 43

This class

Accepted Answer

is absolutely fascinating

Accepted Answer

fills me with joy and purpose

Accepted Answer

is the most fun I have ever had

Accepted Answer

should go on forever and ever

Phase Change Unit Review

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