chapter 11

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Across
  1. 2. a combination of more than one pure substance.
  2. 3. The smallest unit of a substance that exhibits all of the properties characteristic of the substance.
  3. 7. mixing occurs between individual units.
  4. 8. The smallest particle that has the properties of an element.
  5. 10. any matter that has a fixed composition and definite properties.
Down
  1. 1. substances are not uniformly mixed.
  2. 4. the chemical symbols and numbers indicating the atoms contained in the basic unit of a substance.
  3. 5. A substance that can not be broken down into similar substances.
  4. 6. a substance made of atoms more than one element bound together.
  5. 9. Anything that gas mass and occupies space.