polymart

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Across
  1. 4. Biodegradable plastics are designed to break down through the action of __________.
  2. 5. Plastics are primarily made from __________ obtained from crude oil and natural gas.
  3. 10. Carbon black is added to rubber mainly to improve its __________ resistance.
  4. 11. Rubber becomes stronger and more elastic through a process called __________.
  5. 13. PVC stands for Polyvinyl __________.
  6. 14. Natural rubber is primarily obtained from the latex of the __________ tree.
Down
  1. 1. The process used to manufacture plastic pipes is called __________.
  2. 2. Nylon belongs to the family of polymers known as __________.
  3. 3. High-Density Polyethylene (HDPE) has a __________ density than LDPE.
  4. 6. Thermosetting plastics cannot be reshaped after __________.
  5. 7. Thermoplastics can be melted and reshaped because they __________ on heating.
  6. 8. PET is widely used for manufacturing __________ bottles.
  7. 9. The basic repeating unit of a polymer is known as a __________.
  8. 12. Blow molding is mainly used for producing hollow plastic __________.