Chemistry (easy) Heath

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Across
  1. 3. The part of an atom with a negative charge
  2. 4. The part of an atom with a positive charge
  3. 5. The element with the atomic number 1
  4. 7. A combination of multiple atoms or elements that are mixed together to make a new substance
  5. 8. The pieces that make up an atom
  6. 11. Chemical formula for water
  7. 12. The part of an atom with a neutral charge
  8. 13. The center of an atom
Down
  1. 1. A material used to make cans
  2. 2. A radioactive element featured in the hit movie "Back to the Future"
  3. 6. The bond between multiple atoms
  4. 9. number 88 The chemical number for Radium
  5. 10. A radioactive element discovered by Marie Curie