Changes of State: Interactive Learning Quizzes for Year 4 Science

Question 1

When a substance changes state, its chemical makeup:

Accepted Answer

Stays the same

Answer

Changes

Answer

Is created

Answer

Is destroyed

Question 2

When water evaporates, it takes heat from the air, causing a:

Accepted Answer

Cooling effect

Answer

Heating effect

Answer

No change in temperature

Answer

Condensation

Question 3

Which of these substances has the lowest melting point?

Accepted Answer

Mercury

Answer

Water

Answer

Iron

Answer

Oxygen

Question 4

What process occurs when a gas becomes a liquid?

Accepted Answer

Condensation

Answer

Evaporation

Answer

Melting

Answer

Freezing

Question 5

What makes water evaporate?

Accepted Answer

Increased temperature

Answer

Decreased surface area

Answer

High humidity

Answer

Low wind speed

Question 6

Which object is best for condensing water vapor?

Accepted Answer

A cold glass of water

Answer

A hot cup of tea

Answer

A dry cloth

Answer

A metal spoon

Question 7

Which scenario shows evaporation?

Accepted Answer

A wet towel drying in the sun

Answer

Ice melting in a glass of water

Answer

Water droplets on a cold window

Answer

Steam rising from a boiling pot

Question 8

How is sublimation different from condensation?

Accepted Answer

Sublimation changes a solid to a gas, while condensation changes a gas to a liquid

Answer

Sublimation changes a liquid to a solid, while condensation changes a gas to a liquid

Answer

Sublimation changes a gas to a liquid, while condensation changes a solid to a gas

Answer

Sublimation and condensation are the same process

Question 9

Which process does NOT involve a change of state?

Accepted Answer

Dissolving sugar in water

Answer

Melting ice

Answer

Freezing water

Answer

Condensation

Question 10

Which process involves a change from a gas to a liquid?

Accepted Answer

Condensation

Answer

Evaporation

Answer

Melting

Answer

Freezing

Question 11

When water is heated, what change of state does it undergo?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Melting

Answer

Sublimation

Question 12

When a gas cools, what happens to its particles?

Accepted Answer

They move slower.

Answer

They move faster.

Answer

They change shape.

Answer

They disappear.

Question 13

What is the process where a solid changes directly into a gas?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Condensation

Answer

Freezing

Question 14

Why does condensation form on the outside of a cold glass of water?

Accepted Answer

The cold glass cools the air, causing water vapour to turn into a liquid.

Answer

The water vapour in the air is attracted to the cold glass.

Answer

The cold glass freezes the water vapour in the air.

Answer

The water inside the glass turns into a gas and escapes.

Question 15

When steam turns into liquid water, what process is happening?

Accepted Answer

Condensation

Answer

Evaporation

Question 16

When a solid changes to a liquid, what happens to its temperature?

Accepted Answer

It remains the same.

Answer

It increases.

Answer

It decreases.

Answer

It increases and then decreases.

Question 17

When a solid turns into a liquid, what is the process called?

Accepted Answer

Melting

Answer

Evaporation

Answer

Condensation

Answer

Freezing

Question 18

When water changes from a liquid to a solid, what is happening?

Accepted Answer

Freezing

Answer

Melting

Answer

Evaporation

Answer

Condensation

Question 19

When a liquid turns into a gas, what process is occurring?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Freezing

Answer

Melting

Question 20

When steam changes into a liquid, what happens to its density?

Accepted Answer

It increases.

Answer

It decreases.

Answer

It stays the same.

Answer

It changes shape.

Question 21

When a solid changes directly into a gas, what is the name of this process?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Condensation

Answer

Freezing

Question 22

Which of these is an example of a physical change?

Accepted Answer

Melting ice

Answer

Burning wood

Answer

Rusting iron

Answer

Cooking an egg

Question 23

What happens to the particles in a substance when it changes from a solid to a liquid?

Accepted Answer

They move further apart.

Answer

They move closer together.

Answer

They stay the same distance apart.

Answer

They become more ordered.

Question 24

When a gas turns into a liquid, what is the term for this change of state?

Accepted Answer

Condensation

Answer

Evaporation

Answer

Freezing

Answer

Sublimation

Question 25

Does melting require energy or release energy?

Accepted Answer

Requires energy

Answer

Releases energy

Answer

Neither

Answer

Both

Question 26

Which of these is NOT a state of matter?

Accepted Answer

Energy

Answer

Solid

Answer

Liquid

Answer

Gas

Question 27

When ice melts into water, what is happening?

Accepted Answer

Melting

Answer

Freezing

Answer

Vaporizing

Answer

Condensing

Question 28

When water vapour turns into water droplets, what is the process called?

Accepted Answer

Condensation

Answer

Evaporation

Answer

Sublimation

Answer

Deposition

Question 29

What happens when water is heated to its boiling point?

Accepted Answer

It turns into steam

Answer

It turns into ice

Answer

Its color changes

Answer

It becomes sticky

Question 30

When a solid turns directly into a gas, what is the process known as?

Accepted Answer

Sublimation

Answer

Melting

Answer

Freezing

Answer

Deposition

Question 31

Which of these is a physical change?

Accepted Answer

Melting chocolate

Answer

Burning a candle

Answer

Rusting metal

Answer

Digesting food

Question 32

What is the name of the energy needed to change a solid into a liquid?

Accepted Answer

Latent heat of fusion

Answer

Latent heat of vaporization

Answer

Specific heat capacity

Answer

Calorific value

Question 33

Which two factors determine how easily a substance melts?

Accepted Answer

Temperature and pressure

Answer

Color and shape

Answer

Volume and mass

Answer

Smell and taste

Question 34

What is the name of the process when a liquid changes to a gas?

Accepted Answer

Evaporation

Answer

Freezing

Answer

Condensation

Answer

Sublimation

Question 35

Which of the following is a property of gases?

Accepted Answer

They take the shape of their container.

Answer

They have a definite shape of their own.

Answer

They sink in water.

Answer

They are hard to compress.

Question 36

What happens to the particles of a substance when it melts?

Accepted Answer

They move further apart.

Answer

They move closer together.

Answer

They stop moving.

Answer

They change into a different type of particle.

Question 37

What can cause a solid to turn into a liquid?

Accepted Answer

Heating it

Answer

Cooling it

Answer

Adding pressure to it

Answer

Separating its particles

Question 38

What is the opposite of evaporation?

Accepted Answer

Condensation

Answer

Freezing

Answer

Melting

Answer

Sublimation

Question 39

What causes water droplets to form on a window on a cold day?

Accepted Answer

Condensation

Answer

Evaporation

Answer

Freezing

Answer

Rain

Question 40

What happens to the volume of a gas when it is cooled?

Accepted Answer

It decreases.

Answer

It increases.

Answer

It remains the same.

Answer

It becomes zero.

Question 41

How do the particles in a gas behave?

Accepted Answer

They move quickly and randomly.

Answer

They move slowly and in a straight line.

Answer

They are tightly packed together.

Answer

They do not move at all.

Question 42

When a solid turns into a liquid, what is happening to the particles?

Accepted Answer

The particles are moving faster and spreading out.

Answer

The particles are slowing down and coming closer together.

Answer

The particles are changing their shape.

Question 43

Which of these is an example of evaporation?

Accepted Answer

Water disappearing from a puddle on a warm day.

Answer

Water boiling in a kettle.

Answer

Water freezing in a freezer.

Question 44

When a gas turns into a liquid, what is happening to the particles?

Accepted Answer

The particles are slowing down and coming closer together.

Answer

The particles are moving faster and spreading out.

Answer

The particles are changing their shape.

Question 45

What do we call the process when a liquid turns into a solid?

Accepted Answer

Freezing

Answer

Evaporation

Answer

Condensation

Answer

Melting

Question 46

In which state of matter is water at room temperature?

Accepted Answer

Liquid

Answer

Gas

Answer

Solid

Answer

Plasma

Question 47

Which of these is a physical change?

Accepted Answer

Melting ice

Answer

Rusting iron

Answer

Digesting food

Answer

Burning wood

Question 48

Which of these is NOT a change of state?

Accepted Answer

Dissolving sugar in water

Answer

Boiling water

Answer

Melting ice