Matter

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Across
  1. 2. separated by physical means
  2. 4. does not depend on amount of matter
  3. 7. single kind of atom
  4. 8. hardness
  5. 10. shape is fixed
Down
  1. 1. does depend on amount of matter
  2. 3. flammability
  3. 5. uniform composition
  4. 6. not uniform
  5. 9. can be separated by ordinary chemical means