matter

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Across
  1. 2. Your house loses heat through these (5)
  2. 4. Rapid evaporation (7)
  3. 7. a decrease in this makes particles rise (7)
  4. 10. This state of matter can be squashed easily (3)
  5. 13. Solid → liquid temperature (7,5)
  6. 15. This state of matter can flow (6)
  7. 17. Heat energy being passed on from one particle to the next (10)
  8. 19. These have a fixed shape (5)
  9. 20. A measure of how hot or cold something is (11)
Down
  1. 1. These are held together tightly in a solid (9)
  2. 3. particles do this more when heated (7)
  3. 5. Happens when heat is removed from a liquid (8)
  4. 6. Description of gas particles (6,3)
  5. 8. Liquid → gas process (11)
  6. 9. Heat transfer through gases and liquids (10)
  7. 11. This takes the shape of the bottom of its container (6)
  8. 12. Volume of this state of matter is fixed (5)
  9. 14. Substance that allows heat to flow through it (9)
  10. 16. Can reduce heat loss (10)
  11. 18. A form of energy (4)