Chemistry Crossword

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Across
  1. 3. : A substance made up of two or more elements chemically combined in fixed proportions
  2. 5. : Gas changing into liquid
  3. 9. : A combination of two or more substances that are not chemically bonded and can be separated by physical means
  4. 13. : A reaction that releases heat energy to the surroundings
  5. 16. : Negatively charged particle that follows an orbit of a level around a nucleus
  6. 17. : Smallest unit of matter
  7. 18. : The temperature at which a liquid changes to a gas
  8. 20. : A state of matter that has a fixed shape and volume
Down
  1. 1. : Rapid vaporization of a liquid
  2. 2. : Process of liquid turning into gas
  3. 4. : A measure of how hot or cold a substance is
  4. 6. : An instrument used to measure temperature
  5. 7. : Liquid turning into solid
  6. 8. : Positively charged particle in the nucleus
  7. 10. PARTICLE THEORY : The theory that all matter is made up of tiny particle which are in constant motion and that the energy arrangement of these particles determine the state of matter
  8. 11. : Neutral particle found in the nucleus
  9. 12. : A substance that contains only one type of atom and cannot be broken down into anything simpler by chemical means.
  10. 14. : A state of matter that has a definite volume but no fixed shape
  11. 15. : Solid turning into liquid
  12. 19. : A state of matter that has no fixed shape or volume