a) Complete the following sentences with these words: Polymers Thermosetting biodegradable Thermoplastics monomers plastics plastic bottles softer non-toxic polymerization non-corrosive synthetics oil insulators cheap man-made 1. Most plastics are made from___________________. 2. Plastics are _____________________ materials. 3. The process by which we get a polymer is called________________________. 4. Plastics are made of _________________which are obtained form ________________. 5. Most plastics are ________________and are made from ________________. 6. Plastics are good _______________which makes them safe to use for casing electrical equipment. 7. They are not__________________ and cannot be easily recycled. 8. ___________________________are generally strong and resistant to heat. 9. _______________can be heated, moulded and shaped various ways, lots of times. 10. Thermoplastics are usually______________ than thermosetting plastics. 11. Polythene (or polyethylene, or PET) is ideal for use in_______________________. 12. Plastics are __________________ and __________________-. 13. They are relatively____________________. b) True or false. If the sentence is false write it correctly. 1. Plastics are bad insulators which makes them safe to use for casing electrical equipment and for the covering on wires. 2. Plastics are non-corrosive and toxic. 3. They are relatively expensive, biodegradable and we can recycle them easily. 4. Plastic bottles are made of Acrylic because it´s very soft. 5. Plastics wash well and they are waterproof 6. There is one main type of plastic, Thermoplastic . 7. Thermoplastic are generally strong and resistant to heat. 8. Thermosetting plastics can be heated, moulded and shaped various ways, lots of times. What kind of Plastics is used to make these objects? ________ ________________ ____________________ ________________ ___________________ __________________