Chemistry

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Across
  1. 2. Located in the center of an atom consisting of both neutrons and protons.
  2. 5. The SI unit of work energy.
  3. 7. The temperature to allow liquids to evaporate.
  4. 8. An ionized gas consisting of positive ions and free electrons.
  5. 9. The release of heat.
  6. 12. A subatomic particle in an atom with a negative charge.
  7. 14. The change of liquid to gas.
  8. 15. The increase of energy causing rising temperatures.
  9. 16. Causes liquids to turn into gas.
  10. 18. The capacity for doing work.
  11. 19. Causes a liquid to turn into a solid.
  12. 20. A substance that flows freely but is of constant volume.
Down
  1. 1. Certain points that cause the states of matter to change.
  2. 3. Direct change frin solid to gas.
  3. 4. A subatomic particle in an atom with a positive charge.
  4. 6. Firm and stable in shape with high density.
  5. 10. A subatomic particle in an atom with no charge.
  6. 11. Requiring the absorbtion of heat.
  7. 13. Temperature that causes states of matter to go from solid to liquid.
  8. 17. A substance that can expand freely in a container and will adjust to its shape.