chemistry

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Across
  1. 2. takes the shape and volume of the space it is in
  2. 5. a pure substance
  3. 8. holds its shape and keeps the same volume
  4. 9. positively charged particles of atoms
Down
  1. 1. the amount of matter in an object
  2. 3. the smallest particle of matter
  3. 4. negatively charged
  4. 6. takes the shape of the space it's in- fixed volume
  5. 7. less particles of an atom