physical science performance assesment

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Across
  1. 1. flammability, toxicity, combustion
  2. 5. the measurement for mass
  3. 8. penetrating electromagnetic radiation
  4. 10. the region around a magnet
  5. 12. atomic particle with no charge
  6. 14. the SI unit of measurement for energy
  7. 15. An area surrounding an electron
  8. 16. energy cannot be created or destroyed
Down
  1. 2. rate of change of velocity
  2. 3. a gas like mixture of charged particles
  3. 4. equal a net force of 0
  4. 6. states that potential
  5. 7. is able to catch on fire
  6. 9. The mass per unit volume
  7. 11. does not allow electricity to pass
  8. 13. unit of measurement for frequency