Chemistry

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Across
  1. 2. example of matter
  2. 4. example of solid
  3. 7. example of element
  4. 8. what has a positive electric charge?
  5. 10. example of gas
Down
  1. 1. what's a unit of mass?
  2. 3. what's the formula of volume?
  3. 5. what does not have a fixed shape?
  4. 6. what has an electric charge?
  5. 9. what has a neutral charge?