What's the Matter?

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Across
  1. 1. A particle in an atomic nuclei that produces a positive charge.
  2. 5. Substance that can not be broken down to a simpler form.
  3. 7. A form of energy produced by the existence of charged particles.
  4. 12. The smallest particle of a chemical element.
  5. 13. Related to chemistry and substances.
  6. 15. Composed of two or more separate elements.
  7. 17. A particle with an electric charge that is not a proton.
  8. 18. A substance that flows freely.
  9. 19. Able to be drawn out into a thin wire.
Down
  1. 1. Related to the periodic table of elements.
  2. 2. Able to conduct electricity.
  3. 3. Water that forms as droplets.
  4. 4. Purified by heating.
  5. 6. A group of atoms bonded together.
  6. 8. A chemical process in which substances act together.
  7. 9. Related to atom or atoms.
  8. 10. The positively charged core of an atom.
  9. 11. Boiling point or boiling water.
  10. 14. An electric charge gathering on an object that can not conduct a current.
  11. 16. Melt or become liquified by the process of heating.