Matter

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Across
  1. 2. a substance that expands freely
  2. 4. a negatively charged part in the nucleus of an atom
  3. 7. a substance that takes up space
  4. 8. a mix of something
  5. 9. a degree of compactness of a substance
  6. 10. a firm and stable shape
Down
  1. 1. an invisible force or field caused by the unique properties of certain materials.
  2. 3. building block of life
  3. 5. a substance that flows freely and doesn't have a constant volume
  4. 6. a positively charged part in the nucleus of an atom