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Science Quiz - Solids, Liquids and Gases 01 (Questions)

Solids, liquids, and gases are the three main states of matter. In KS2 Science, pupils learn how particles behave differently in each state.

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Fascinating Fact:

Glass is made from melted sand and is sometimes called a supercooled liquid because its particles are not arranged like most solids.

In KS2 Science, pupils explore how matter changes state through heating and cooling. Solids, liquids, and gases differ because of how their particles are arranged and how much energy they have.

Key Terms

Solid: A state of matter where particles are tightly packed and the shape is fixed.
Liquid: A state of matter where particles can move around, so liquids flow and take the shape of their container.
Gas: A state of matter where particles are far apart and move freely, filling all available space.

Frequently Asked Questions (Click to see answers)

What are the three main states of matter?

The three main states of matter are solids, liquids, and gases. They differ in particle arrangement, energy, and movement.

How can matter change from one state to another?

Matter can change state through heating or cooling, such as melting ice to form water or boiling water to form steam.

Why is glass sometimes called a supercooled liquid?

Glass is called a supercooled liquid because its particles are not arranged like a typical solid, even though it feels solid to touch.

Try These Related Quizzes

1.

Which of these is not true of solids?

[ ]	Solids can be cut or shaped
[ ]	A solid expands to fill its container
[ ]	Solids will stay the same shape and size unless acted upon by a force
[ ]	Solids can be grasped (held on to)

2.

Which of these is not true of liquids?

[ ]	The shape of a liquid does not change
[ ]	A liquid takes the shape of its container
[ ]	Liquids are runny and can be poured
[ ]	The volume of a liquid does not change

3.

Which of these is not true of gases?

[ ]	Unless held in a sealed container, gases keep expanding in volume
[ ]	A gas takes the same shape as its container
[ ]	A gas will have the same volume as its container
[ ]	Gases can be poured from one container to another

4.

Which has the most densely-packed particles?

[ ]	Solids
[ ]	Liquids
[ ]	Gases
[ ]	Particles are equally dense in solids, liquids and gases

5.

Which of these has the least densely-packed particles?

[ ]	Solids
[ ]	Liquids
[ ]	Gases
[ ]	Both liquids and gases

6.

When a solid is heated, it changes into a liquid. What do we call this process?

[ ]	Condensing
[ ]	Freezing
[ ]	Dissolving
[ ]	Melting

7.

When a liquid cools enough it becomes a solid. What do we call this process?

[ ]	Evaporating
[ ]	Condensing
[ ]	Freezing
[ ]	Dissolving

8.

What is the boiling point of water?

[ ]	0^o C
[ ]	50^o C
[ ]	100^o C
[ ]	212^o C

9.

What is the freezing point of water?

[ ]	-55^o C
[ ]	-12^o C
[ ]	0^o C
[ ]	32^o C

10.

When you fill a jug with sugar, it appears to have the same shape as the jug. You can also tip sugar from one container to another. Is sugar a solid, a liquid or a gas?

[ ]	A liquid
[ ]	A solid
[ ]	A gas
[ ]	A condensed gas

You can find more about this topic by visiting BBC Bitesize - Solids, liquids and gases

Science Quiz - Solids, Liquids and Gases 01 (Answers)

1.

Which of these is not true of solids?

[ ]	Solids can be cut or shaped
[x]	A solid expands to fill its container
[ ]	Solids will stay the same shape and size unless acted upon by a force
[ ]	Solids can be grasped (held on to)

Solids stay the same shape and size, whatever container they are in

2.

Which of these is not true of liquids?

[x]	The shape of a liquid does not change
[ ]	A liquid takes the shape of its container
[ ]	Liquids are runny and can be poured
[ ]	The volume of a liquid does not change

The shape of a liquid changes to fit its container

3.

Which of these is not true of gases?

[ ]	Unless held in a sealed container, gases keep expanding in volume
[ ]	A gas takes the same shape as its container
[ ]	A gas will have the same volume as its container
[x]	Gases can be poured from one container to another

Gases always take the same shape and volume as their containers. If not held in a sealed container, a gas will keep spreading

4.

Which has the most densely-packed particles?

[x]	Solids
[ ]	Liquids
[ ]	Gases
[ ]	Particles are equally dense in solids, liquids and gases

The particles of a solid are held together by strong forces of attraction

5.

Which of these has the least densely-packed particles?

[ ]	Solids
[ ]	Liquids
[x]	Gases
[ ]	Both liquids and gases

Gases have low density, with particles moving randomly and at high speed

6.

When a solid is heated, it changes into a liquid. What do we call this process?

[ ]	Condensing
[ ]	Freezing
[ ]	Dissolving
[x]	Melting

Ice is a solid. If you heat it, it melts and becomes a liquid (water)

7.

When a liquid cools enough it becomes a solid. What do we call this process?

[ ]	Evaporating
[ ]	Condensing
[x]	Freezing
[ ]	Dissolving

When water (a liquid) is cold enough it freezes and turns into ice (a solid)

8.

What is the boiling point of water?

[ ]	0^o C
[ ]	50^o C
[x]	100^o C
[ ]	212^o C

Water boils at 100^o C if you live close to sea-level. If you lived at the top of a 3,048 metre mountain, your water would boil at 90^o C!

9.

What is the freezing point of water?

[ ]	-55^o C
[ ]	-12^o C
[x]	0^o C
[ ]	32^o C

The Celsius temperature scale is based on the freezing and boiling points of water - 0^o C is the freezing point and 100^o C is the boiling point

10.

When you fill a jug with sugar, it appears to have the same shape as the jug. You can also tip sugar from one container to another. Is sugar a solid, a liquid or a gas?

[ ]	A liquid
[x]	A solid
[ ]	A gas
[ ]	A condensed gas

You can see the tiny solid crystals when you look closely at sugar