Digraph /ch/ makes a "k" sound

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Across
  1. 4. a scientist who works with chemicals; also another name for a pharmacy (where you might get medicine)
  2. 5. a group of singers, or the part of a song everyone sings.
  3. 9. Complete mess or confusion.
  4. 10. a place where old documents or records are stored.
  5. 13. a chemical used to clean swimming pools.
  6. 14. a lizard that changes colour to blend in.
  7. 16. a beautiful flower, often pink or purple.
  8. 17. a group of people singing together.
Down
  1. 1. a plant-like thing that grows on rocks or trees.
  2. 2. a substance made by or used in science.
  3. 3. the part of your body that digests food.
  4. 6. a place you might go to learn.
  5. 7. a country ruled by a king or queen
  6. 8. a clever plan or design.
  7. 10. a heavy object that keeps a ship in one place.
  8. 11. to do with science, machines, or special skills.
  9. 12. an adjective; describes something that is very messy or out of control.
  10. 15. a sound that bounces back to you.