Chemistry unit

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Across
  1. 4. a liquid mixture that has particles dissolved in it.
  2. 7. a change that occurs because of a chemical reaction.
  3. 10. a combination of things that are not chemically combined
  4. 11. the negative charge in an atom.
  5. 12. the number that orders the elements and shows how many protons it has.
  6. 14. two or more elements that are chemically combined.
  7. 15. the positive charge in an atom.
Down
  1. 1. a form elements take that is wet.
  2. 2. form that hydrogen is...
  3. 3. the mass of the atom gives you the number of neutrons when you subtract the number of protons.
  4. 5. a form elements take that is hard, the opposite of liquid.
  5. 6. a change that occurs to the appearance.
  6. 8. has zero charge in an atom.
  7. 9. how much space something takes up.
  8. 13. simplest form: atom