Matter Crossword Puzzle :)

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Across
  1. 2. change of state that doesn't change the matter's identity
  2. 3. matter that can vary in composition
  3. 5. a substance that consists of only one atom
  4. 10. ability or inability of substances to combine with new substances
  5. 12. anything that has mass and takes up space
  6. 13. matter with a definite volume but no definite shape
  7. 14. matter that has no definite volume and no definite shape
Down
  1. 1. characteristic of matter you can measure without changing it
  2. 3. two or more atoms that are held together by bonds
  3. 4. desc. of a chemical reaction with symbols and chemical formulas
  4. 6. a substance containing atoms or two or more different elements chemically bonded together
  5. 7. an ionized gas consisting of positive ions and free electrons
  6. 8. the building block of matter
  7. 9. a substance that has a fixed chemical composition throughout
  8. 11. matter that has a definite shape and definite volume