Science Review Puzzle

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Across
  1. 3. the measure of how compact the mass of an object is within a defined space
  2. 5. the amount of space an object occupies
  3. 6. a tiny particle that makes up all matter
  4. 10. a positively charged component of an atom
  5. 11. a mixture that is the same throughout
  6. 12. anything that has mass and takes up space
  7. 14. a property or characteristic of an item to react with another substance
  8. 15. matter that does not have a definite shape, but does have definite volume
  9. 16. a mixture where the items mixed retain their chemical properties
Down
  1. 1. matter that does not have definite shape and does not have definite volume
  2. 2. the component of an atom that does not contain a charge or is neutral
  3. 4. a negatively charged component of an atom
  4. 7. the amount of matter in an object
  5. 8. matter with a definite shape and a definite volume
  6. 9. the ability of a substance to react with fire
  7. 10. a property of a substance that can be observed or measured without changing the substance
  8. 13. the state or quality of shine of an object