matter

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Across
  1. 2. a fluid that conforms to the shape of its container
  2. 6. the process where a liquid turns to a solid
  3. 7. the total of all the protons, neutrons, and electrons within an object
  4. 9. The smallest part of a substance that cannot be broken down chemically
  5. 10. A basic part of a whole
  6. 12. a subatomic particle with no electrical charge
  7. 13. the force exerted on a body by gravity
  8. 15. a combination of two or more substances
Down
  1. 1. the process where a solid changes to a liquid
  2. 3. a substance that is in a gaseous, or vaporous, state of matter
  3. 4. a subatomic particle with a positive electrical charge
  4. 5. the process where a liquid turns into a vapor when heat or energy is add
  5. 7. anything that takes up space and has mass
  6. 8. something that is made up of only one kind of partial
  7. 11. a state of matter characterized by particles arranged such that their shape and volume are relatively stable
  8. 14. a subatomic particle with negative electrical charge