Chemistry

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Across
  1. 5. the number of protons in the nucleus of an atom.
  2. 10. a new substance is mad through forming or breaking of chemical bonds.
  3. 13. What makes up everything
  4. 14. all atoms want 8 of these
Down
  1. 1. neutral particles
  2. 2. positively charged
  3. 3. This is a reaction when atoms combine to make a compound
  4. 4. good conductors, gold, silver, copper, tin, etc.
  5. 6. nothing new is formed, only change.
  6. 7. Extremely unreactive gasses
  7. 8. smallest unit into which matter can be divided
  8. 9. 1st column on periodic table
  9. 11. negatively charged particles
  10. 12. charged particle that results in loss or gain of an atom.