Unit 7: Energy and Changes

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Across
  1. 1. material, it traps thermal energy
  2. 3. material, thermal energy can travel through it
  3. 6. the point at which a substance dissolves
  4. 8. a process that is used to separate solids from liquids
  5. 11. process by which an element or compound transitions from its liquid state to its gaseous state below the temperature at which it boils
  6. 15. when substances increase in volume when their temperature increases
  7. 17. happens in living things and can be used to produce yogurt
  8. 19. made of different substances
Down
  1. 2. materials that will eventually run out because they are used more than they are produced
  2. 4. a process that separates liquids that have different boiling points
  3. 5. different forms of matter
  4. 7. all of these contain two or more substances
  5. 9. materials that do not run out because they are produced faster than they are used
  6. 10. happens when a substances combines very quickly with oxygen and releases energy
  7. 12. when the different components cannot be distinguished
  8. 13. when substances decrease in volume when the temperature decreases
  9. 14. happens when a substance combines with oxygen
  10. 16. a mix of metals
  11. 18. material, it does not allow light energy to pass through it