Matter

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 3. State of matter that flows like water (6)
  2. 5. The withdrawal of heat to change something from a liquid to a solid (8)
  3. 7. State of matter that fills any space, like air (3)
  4. 10. The application of heat to change something from a liquid to a gas (7)
  5. 11. A piece of photographic film showing an image with light and shade or colors reversed (8)
  6. 12. A change directly from the solid to the gaseous state without becoming liquid (11)
  7. 13. The temperature below which a liquid turns into a solid (13)
  8. 14. Hopeful and optimistic; the opposite of negative (8)
  9. 15. That which has mass and occupies space (6)

Down

  1. 1. The process of changing from a gaseous to a liquid or solid state (12)
  2. 2. One who does not side with any party in a war or dispute (7)
  3. 4. English chemist and physicist who formulated atomic theory and the law of partial pressures (6)
  4. 6. An elementary particle with negative charge (plural) (9)
  5. 8. State of matter with a fixed shape (5)
  6. 9. The process whereby heat changes something from a solid to a liquid (7)
  7. 14. A stable particle with positive charge equal to the negative charge of an electron (plural) (7)