Matter

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