States of Matter

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Across
  1. 4. When matter is heated and expands,When it cools it contracts
  2. 7. a negatively charged subatomic particle that can be either bound to an atom or free.
  3. 9. a substance that is in a gaseous, or vaporous, state of matter
  4. 10. anything that takes up space and can be weighed
  5. 11. solid, liquid, gas, and plasma.
  6. 13. made up of proton, neutrons, and electrons
  7. 14. the number of a chemical element in the periodic system and on the periodic table that equals the number of protons in the nucleus of the atom
  8. 16. a measure of the amount of matter in an object
Down
  1. 1. large particle with no change found in the nucleus of an atom.
  2. 2. when matter changes from one state (solid, liquid, gas, plasma) to another
  3. 3. All matter is made up of particles which are in constant motion
  4. 5. a short notation of one or two letters representing an element.
  5. 6. A state of matter which has a fixed shape, mass, and volume
  6. 8. the only state with a definite volume but no fixed shape
  7. 12. the quantity of matter contained in an atom of an element.
  8. 15. A substance that cannot be broken down into simpler substances by chemical means