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

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

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

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

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? ATOMS answer

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

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

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

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

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

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

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

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

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? The movement of particles from a region of high concentration to a region of low concentration answer

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

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

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

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

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

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

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

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

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

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