Changes in materials - Solids, liquids and gases - Quiz

Which substance can dissolve completely in water?

 Sand

 Flour

 Salt

2.

Substances that dissolve in water are called

 solutions

 insoluble

 soluble

3.

How could you separate a mixture of sand and salt?

 Mix with water, filter, and then evaporate

 Mix with water, evaporate and then filter

 Filter and then mix with water

4.

Will the steam from seawater be salty?

 Yes

 No

 Some of the steam will be salty

5.

Are melting, freezing, boiling, evaporating and condensing ALWAYS reversible changes?

 No

 Yes

 Only sometimes

6.

Which of these is a reversible change?

 Metal rusting

 Baking a cake

 Freezing orange juice to make an ice lolly

7.

Which of these is an irreversible change?

 Candle wax melting

 Candle wax burning

 Ice cream melting

8.

What new materials are formed when a candle burns?

 Melted wax

 Water and carbon dioxide and soot

 No new materials are formed

9.

How could you change burnt paper back into its original form?

 Cool it

 Scrape off the soot

 You can't

10.

Which of these statements is FALSE?

 Freezing is not a reversible change

 Heating a substance can cause both reversible and irreversible changes

 Dissolving is a reversible change

Solids, liquids and gases - Quiz

Which of the following is NOT a gas?

 Air

 Car exhaust fumes

 The sea

2.

You blow up a balloon. Is it heavier or lighter than the uninflated balloon?

 Heavier

 Lighter

 They weigh the same

3.

When you squeeze a sponge under water, what are the bubbles that escape?

 Pieces of sponge

 Air coming from the spaces in the sponge

 Water

4.

Which material is a liquid?

 Sponge

 Shampoo

 Salt

5.

Which material is a solid?

 Syrup

 Cooking oil

 Cotton wool

6.

To change a solid metal to a liquid, you would

 heat it

 cool it

 bend it

7.

Which of these is NOT an example of a solid?

 Dust

 Runny honey

 Gravel

8.

Which one of these best describes a solid?

 My particles are packed tightly together. I keep my shape.

 My particles are loosely packed. I take the shape of my container.

 My particles have lots of room. I try to spread out in every direction.

9.

Which one of these best describes a liquid?

 My particles are packed tightly together. I keep my shape.

 My particles are loosely packed. I take the shape of my container.

 My particles have lots of room. I try to spread out in every direction.

10.

Which one of these best describes a gas?

 My particles are packed tightly together. I keep my shape.

 My particles are loosely packed. I take the shape of my container.

 My particles have lots of room. I try to spread out in every direction.