A Hughes Chapter 11 test

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