Class 7

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Across
  1. 1. A change that can be easily undone or reversed.
  2. 8. Metal that burns with a dazzling white light.
  3. 9. Obtaining pure solids as crystals from a solution.
  4. 10. Direct change from solid to gas.
  5. 11. Insoluble solid formed during a chemical reaction.
  6. 14. Coating iron with zinc to prevent corrosion.
Down
  1. 2. A change that is permanent.
  2. 3. Turns milky when carbon dioxide is passed through it.
  3. 4. A blue solution which turns green in contact with iron.
  4. 5. A change where a new substance is formed.
  5. 6. A chemical reaction that we call burning.
  6. 7. Reacts with baking soda to form bubbles.
  7. 12. The slow chemical change that damages iron.
  8. 13. A change in form, but not in identity.