Water!

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Across
  1. 3. a trait or feature of an object that you can observe.
  2. 4. to change something back to the way it was before
  3. 7. the amount of matter an object contains relative to its volume
  4. 8. incapable of being dissolved
  5. 10. two or more objects that are put together and not easily separated
  6. 11. the liquid that dissolves
  7. 12. a way to measure how hot or cold something is
  8. 14. molecule: one side of a molecule is more positively charged and the other side is more negatively charged.
Down
  1. 1. bond: a special kind of connection between molecules.
  2. 2. a change that cannot be undone or reversed.
  3. 5. ability of an object to float on water
  4. 6. the ability to dissolve
  5. 9. the smallest particle of an element.
  6. 11. tension: a net like pattern on the surface of water
  7. 13. Anything that has weight and takes up space