Elder Crossword

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Across
  1. 2. that has gained or lost electrons
  2. 4. particle with a positive charge
  3. 5. particle with a negative charge
  4. 7. made up of multiple substances
  5. 10. number/number of protons in an element
  6. 11. /the amount of mass per volume
  7. 12. of matter similar to gas
  8. 13. of matter with a definite shape and volume
  9. 14. amount of matter in an object
Down
  1. 1. particle with no charge
  2. 3. form of a chemical element
  3. 6. of matter that takes the shape of its container
  4. 8. center of an atom, made of protons and neutrons
  5. 9. of matter with no definite shape or volume