chemistry

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Across
  1. 2. Subatomic particle with no charge
  2. 3. Shiny
  3. 7. number of protons
  4. 11. A substance that cannot be broken down
  5. 12. A substance made of mixing other substances
  6. 13. A type of element found on the periodic table
  7. 14. Subatomic particle with a positive charge
  8. 16. An elemental substance which has properties of metals and non metals
  9. 17. Something that is the creation of everything
  10. 18. where protons and neutrons are in an atom.
Down
  1. 1. Conducts electricity well
  2. 4. Easily broken
  3. 5. number the sum of protons and neutrons in an atom
  4. 6. A group of atoms bonded together
  5. 8. Can be made into a wire
  6. 9. An elemental substance that isn't a metal
  7. 10. Subatomic particle with a negative charge
  8. 13. Can be bent
  9. 14. test to test if a combustible gas is present by hearing a pop.
  10. 15. A mixture of two different substances