matter

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Across
  1. 1. a change from one state (solid or liquid or gas) to another without a change in chemical composition
  2. 3. the change of state from a liquid to a solid
  3. 7. An atom's central core, containing protons and neutrons.
  4. 10. A group of atoms bonded together
  5. 11. a change of matter from one form to another without a change in chemical properties
  6. 13. of matter solid, liquid, gas, plasma
  7. 15. gas to solid
  8. 17. Liquid to gas
  9. 18. negatively charged particle
Down
  1. 2. Gas to liquid
  2. 4. plasma states of matter
  3. 5. 32 degrees Fahrenheit and 0 degrees Celsius
  4. 6. A change that occurs when one or more substances change into entirely new substances with different properties.
  5. 7. basic unit of matter
  6. 8. a small particle in the nucleus of the atom, with no electrical charge
  7. 9. solid to gas
  8. 12. The change in state from a solid to a liquid
  9. 14. 2 hydrogen atoms(+), 1 oxygen atom(-)
  10. 16. positively charged particle