called the best crossword in the galaxy

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Across
  1. 2. describes 2 or more liquids that are able to dissolve into eachother in various portions
  2. 5. a combination of more than one pure substance
  3. 6. the chemical symbols and numbers indicating the atoms contained in the basic unit of a substance
  4. 10. a substance that cannot be broken down into simpler substances.
Down
  1. 1. the smallest particle that has the properties of an element
  2. 3. a substance made of atoms of more than one element bound together
  3. 4. any matter that has a fixed composition and definite properties
  4. 7. describes 2 or more liquids that do not mix into esch other
  5. 8. the smallest unit of a substance that exhibits all of the properties characteristics of the substance
  6. 9. is anything that has mass and takes up space