Science

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Across
  1. 1. substance which expands freely to fill any space available
  2. 5. neutral group of two or more atoms held together by chemical bonds
  3. 6. a substance made by mixing other substances
  4. 9. originating outside the organism.
  5. 10. substance that flows freely but is of constant volume
  6. 11. firm and stable in shape
Down
  1. 2. smallest constituent unit of ordinary matter
  2. 3. the ability of a substance to dissolve
  3. 4. identification of the substances of which matter is composed
  4. 7. also known as a pure substance
  5. 8. homogenous type of mixture
  6. 9. of the same kind