Across
- 5. gas particles collide with each other and the ________ of a container
- 7. has an indefinite shape and an indefinite volume
- 8. all matter is composed of __________
- 9. the state of a sample of matter depends on __________
- 12. liquid particles have more space and ________ past each other
- 13. thermal __________ is the increase in size of a substance when the temperature increases, and contracts when cooled
- 14. solid particles are closely packed in a _________ arrangement
Down
- 1. particles are in _________, random motion
- 2. the exception to the rule of thermal expansion
- 3. anything that has mass and takes up space
- 4. has a definite shape and definite volume
- 6. related to the average kinetic energy of an object's atoms or molecules
- 8. a high temperature gas
- 10. has an indefinite shape and definite volume
- 11. ________ theory that explains how particles in matter behave