cells

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Across
  1. 1. the transfer of energy as waves
  2. 3. gas particles a far apart and can be pushed together, we say that gases can be ....?...
  3. 7. transfer of energy through a substance due to particles colliding
  4. 8. how particles in a solid move
  5. 10. transfer of energy due to the movement of particles
  6. 12. the units of energy
Down
  1. 2. what holds the particles in a solid and liquid togeteher
  2. 4. changes in this property are needed to allow convection currents to occur
  3. 5. space is described as this as it has no particles
  4. 6. materials that do not allow electricity of heat to transfer easily
  5. 9. materials that transfer heat and electrical energy well
  6. 11. the term for a gas becoming a liquid