Matter 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

1. Label these states of matter? answer Solid Liquid Gas

2. Which state of matter has a fixed shape and volume? answer Solid

3. Which state of matter has a fixed volume but no fixed shape (it takes the shape of the container it’s placed in)? answer Liquid

4. Which state of matter doesn’t have a fixed volume or shape (it expands to fill the container)? answer Gas

5. Explain why cooling the hot ball allows it to fit through the hoop? The ball has contracted. The particles which make it are closer together.

6. What are the small particles called that make up all matter? answer ATOMS

7. Describe how the particles are arranged in a solid? answer They vibrate and are arranged in rows with very small spaces between them.

8. Which state of matter has small spaces between the particles but is NOT arranged in neat rows? answer Liquid

9. What describes particles in a liquid sliding over each other? answer FLOW

Which state of matter has particles which constantly move about and have big spaces between them? answer GAS

11. Which state of matter has the most energy? answer Gases have the most energy Solids have the least energy

12. Which state of matter can be compressed? Why? answer Gases Because they have large spaces between molecules

13. Can solids be compressed? Explain you answer. No Because there are only small spaces between the particles

14. Can liquids be compressed? Explain you answer. No Because there are only small spaces between the particles

15. What will happen to the total volume when these are mixed? Why? The volume will decrease. The small particles fit into the gaps between the large particles

16. Explain why heating the ball stops it fitting through the hoop? The ball has expanded. The particles which make it are further apart.

17. What is diffusion? answer The movement of particles from a region of high concentration to a region of low concentration

18. Which state of matter diffuses easily? Gases diffuse easily Liquids less quickly Solids DO NOT diffuse easily

19. Which word is used to describe a solid changing into a liquid? answer Melting

20. What happens at melting point? answer A solid changes into a liquid

21. Which word is used to describe a liquid changing into a gas? answer Evaporation

22. What happens at the boiling point of a substance? answer It changes from a liquid to a gas.

23. Which term is used to describe a substance changing from a liquid to a solid? answer Freezing

24. What do you call the temperature at which a substance changes from a liquid to a solid? FREEZING POINT

25. What will happen to a substance as you heat it? It EXPANDS

26. What happens when a substance expands? The particles move further apart

27. Explain why the bimetallic strip bends when heated? The two metals expand at different rates