1. Science Review

2. The state of matter that has no definite shape or volume.
gas

3. Changing from a gas to a liquid
condensation

4. The changing of a liquid to a gas
evaporation

5. The state of matter with a definite shape and volume
solid

6. Anything that has mass and occupies space
matter

7. The state of matter with a definite volume but no definite shape
liquid

8. Particles are held rigidly in place
Solid

9. Takes the shape of the container
Liquid
Gas

10. Has a definite shape
solid

11. Particles are touching
Solid, liquid

12. Particles slide over one another
liquid

13. Particles are far apart
gas

14. The freezing point of a substance is the same as its …..
melting

15. Evaporation changes a ….
Liquid to a gas

16. Boiling water involves the same change of state as….
evaporation

17. How does heat affect the state of a substance?

18. Increasing the heat - Increases the motion of particles, which cause them to move further apart, causing the change in state

19. Decreasing the heat reverses the process

20. How does pressure change the state of a substance?

21. Increasing the pressure – forces the particles closer together

22. Decreasing has the reverse effect

23. In the 3 states, which particles are the closest?
Solid

24. Which are the furthest apart?
gas

25. In which state do the particles move the slowest?
solid

26. The fastest?
gas

27. How do you change a solid to a liquid?
heating

28. Liquid to a solid?
freeze

29. Liquid to a gas
Heating until it evaporates

30. Gas to a liquid?
Cooling it until it condenses

31. How is dew formed
Water condenses in the cool of the night

32. At room temperature what is the state of the following items?

33. oxygen
gas

34. iron
solid

35. water
liquid

36. sugar
solid

37. helium
gas

38. tissues
solid

39. THE END