Wrap up....Polymer

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Across
  1. 2. It has the ability to deform and return to their original shape.
  2. 3. Fiber made by human through chemical synthesis.
  3. 5. Toothbrush are made of...
  4. 8. It could not be reheated or reformed.
  5. 11. A-B-A-B-A-B is a structure of...polymer.
  6. 12. Soccer ball is made of polyurethane, polyester, and...
  7. 13. A-A-A-B-B-B is a structure of...polymer.
  8. 15. It is made of polyacrylonitrile.
  9. 17. Small subunit of polymer.
  10. 18. It is a thermoset plastic.
Down
  1. 1. Rayon is a ... fibers.
  2. 4. It can be recycle.
  3. 6. Laptop casing is made of...
  4. 7. A long chain molecule that composed of a large number of repeating unit.
  5. 9. Polyester is made of many units of...
  6. 10. Polymer that isolated from natural material.
  7. 14. ...polymer is a long chain polymer with inter connection between chain.
  8. 16. Thermoplastic composes of... or branch chain polymer.