Chemistry

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Across
  1. 4. Pure
  2. 5. smallest part of compound
  3. 6. Negative charge
  4. 8. Neutral
  5. 9. a mix of protons and neutrons
  6. 10. the number of protons in an Atom
Down
  1. 1. is a pure substance that only contains one type of atom
  2. 2. number the total number of protons and neutrons in a nucleus
  3. 3. positive charge
  4. 4. Mixture
  5. 7. mass The weight of a particle in relation to anther
  6. 11. impure substance
  7. 12. When you have 2 or more elements that are chemically combined in a fixed ratio