1. Waid Academy Science Particles: Solids, Liquids & Gases

2. Which of the following is NOT one of the three states of matter? 1.Solid 2.Liquid 3.Gas 4.Air Solid Liquid Gas 10

3. Solids keep a fixed shape and volume 1.True 2.False 10

4. Identify the correct fact about liquids 1.Liquids keep the same shape 2.Liquids keep their volume 3.Liquids are clear 4.You can see through a liquid 15

5. When liquid water in a kettle boils to form steam this is known as… 1.Melting 2.Freezing 3.Evaporating 4.Condensing 10

6. 25 cm 3 of dried peas and 25 cm 3 of sand are added together. What might the final volume be? 1.Exactly 50 cm 3 2.Less than 50 cm 3 3.More than 50 cm 3 4.Exactly 25 cm 3 15

7. What does diffusion mean? 15 1.A substance taking up more room when it is heated 2.A substance taking up less room when it is cooled 3.Movement of one substance through another. 4.A liquid changing into a solid

8. Why is diffusion quicker in gases than in liquids? 10 1.Gas particles have big spaces between them & move faster 2.Gas particles have small spaces between them & move faster 3.Gas particles have big spaces between them & move slower 4.Gas particles have small spaces between them and move slower

9. Expansion in a solid, liquid or gas happens when the substance is… 1.Pulled 2.Pushed 3.Cooled 4.Heated 10

10. Why do railway lines have small gaps between the rails? 1.So that they can contract in the heat 2.So that they can expand in the heat 10

11. Why are telephone lines put up slack on a hot summer day? 1.They would expand & snap in hot weather 2.They would contract & snap in hot weather 3.They would contract & snap in cold weather 4.They would expand & snap in cold weather 15