Matter

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Across
  1. 6. contains regions that have different properties from others
  2. 7. contain two or more kinds of atoms
  3. 9. always has the same composition
Down
  1. 1. a pure substance
  2. 2. has mass and occupies space
  3. 3. Contain only one kind of atom
  4. 4. the same throughout
  5. 5. change involves a change in the physical properties
  6. 7. change a substance's ability to change in one or more new substances
  7. 8. atoms bound together in a particular way