matter

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Across
  1. 3. form of matter that has a constant composition and properties that are constant throughout the sample
  2. 4. characteristic of a particular substance that can be observed in a chemical reaction.
  3. 6. a state of matter that retains its density and shape
  4. 8. a chnage of materials into another
  5. 9. two or more substances that are mixed together
  6. 10. a characteristic of matter that may be observed and measured without changing the chemical identity of a sample.
  7. 11. anything that takes up space or be weighed
  8. 12. a particle of matter that defines a chemical element
  9. 13. a sample of matter that is the opposit of solid
Down
  1. 1. the smallest particle of a substance
  2. 2. a change in matter that is reversable
  3. 5. an electricaly charged gas
  4. 7. when two or more elements combine chemicaly