Across
- 3. when a liquid turns into a gas
- 5. macroscopic a word to describe something that can NOT be seen with the unaided eye
- 7. a combination of two or more atoms
- 8. a type of energy that describes the motion of particles in a substance
- 12. the process when a gas turns into a liquid
- 13. a word for both atoms and molecules
- 15. matter that does not have a definite volume or shape
- 17. anything that has volume and mass
- 18. the simplest substances made up of one type of atom
Down
- 1. a measure of the average speed of particles
- 2. when a solid turns directly into a gas
- 4. a substance that can make soil, air, or water harmful to organisms and structures
- 5. ____ point, the temperature when a solid turns to a liquid
- 6. matter with a definite shape and volume
- 9. a measure of how much space something takes up
- 10. ____ point, the temperature when a liquid turns to a gas
- 11. matter with a definite volume but not a definite shape
- 14. the basic building block of matter
- 16. the transfer of thermal energy
- 17. a word to describe something that can be seen with the unaided eye
- 19. the amount of "stuff" something has