find out

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Across
  1. 4. negative ion
  2. 6. the smallest unit of an element
  3. 8. this is the reaction if you chop wood
  4. 9. the amount of kinetic energy in something
  5. 11. the potential to move
  6. 12. no charge
Down
  1. 1. two physically mixed elements
  2. 2. the energy of motion
  3. 3. positive ions
  4. 5. this is the reaction of rusting metal
  5. 7. the complete amount of kinetic energy
  6. 10. only one type of atom