Chapter 3 and 4 Vocabulary

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Across
  1. 1. state of matter-high level of kinetic energy and variable shape
  2. 7. __ number: the number of protons in an atom
  3. 8. substance changes from a gas to a liquid
  4. 9. state of matter-low level of kinetic energy and fixed volume
  5. 10. substance changes from a solid to a liquid
  6. 12. __ number: the number of protons and neutrons in an atom
  7. 13. system releases energy to the surroundings
  8. 14. substance changes from a gas directly to a solid
  9. 17. subatomic particle found in nucleus with protons
Down
  1. 2. substance changes from a solid directly to a gas
  2. 3. substance changes from a liquid to a solid
  3. 4. substance changes from a liquid to a gas
  4. 5. state of matter-definite volume, no definite shape
  5. 6. system absorbs energy to the surroundings
  6. 11. atoms of the same element with different number of neutrons
  7. 13. subatomic particle with mass so small it is insignificant
  8. 15. __ level: possible energy that electrons of an atom have
  9. 16. positively charged subatomic particle