Chapter 11 crossword

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