matter

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Across
  1. 3. movement energy
  2. 5. matter and energy working together
  3. 6. things energy moves easily through
  4. 8. get smaller or shrink
  5. 10. energy does not easily move through this
  6. 11. positive charge
  7. 12. neutral charge
  8. 14. center of an atom
  9. 15. anything that has mass and takes up space
Down
  1. 1. things we cannot do
  2. 2. smallest unit of matter
  3. 4. negative charge
  4. 7. make better
  5. 9. A tool for measuring thermal energy
  6. 13. stretch or get longer