science things

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Across
  1. 4. only one type of atom is present
  2. 5. smallest particle of a compound
  3. 6. physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, esp. as distinct from energy
  4. 8. substance- a sample of matter that has definite chemical and physical properties\
  5. 9. separated chemically
  6. 10. is a substance that accepts hydrogen ions
Down
  1. 1. a substance made by mixing other substances together
  2. 2. the smallest particle of an element
  3. 3. separated physically
  4. 7. two or more elements together