chemistry

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