Physical and chemical cahnges

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Across
  1. 3. a change in which a substance undergoes changes only in its physical properties
  2. 6. a reddish-brown substance usually found on iron objects like iron nails etc.
  3. 7. the process of turning from liquid into vapour.
  4. 8. reactions during which heat is released
  5. 9. when a compund breaks into two or more substance
  6. 10. the process of obtaining crystals of a substance from its solution in water
Down
  1. 1. the process of depositing a layer of zinc on iron
  2. 2. when two substances react chemically to form a new substance
  3. 4. reactions during which heat is absorbed
  4. 5. when a compound is formed from its elements