Connor Thomas - chemistry

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Across
  1. 2. a negatively charged particle
  2. 6. materials mixed together
  3. 7. what we end with
  4. 9. atoms bonded together
  5. 13. reaction where clouds form
  6. 14. a particle with no charge
  7. 17. chemicals combine in specific amounts
  8. 19. the number of protons in the nucleus of an atom
Down
  1. 1. a positive particle
  2. 3. a property of a substance that is observed during a chemical reaction
  3. 4. a chemist who developed the periodic table of the chemical elements
  4. 5. a substance that cannot be broken down into simpler substances
  5. 7. you can experience with your 5 senses
  6. 8. mass of an atom
  7. 10. smallest part of any element
  8. 11. materials does change
  9. 12. materials dont change
  10. 15. mixture is the same
  11. 16. a table of elements
  12. 18. materials we start with