1.3 Polymers

What is a polymer?

• A polymer is a large molecule composed of repeating units of a monomer

• A polymer is a single atom with multiple covalent bonds
• A polymer is a type of metal alloy
• A polymer is a small molecule composed of non-repeating structural units

What is a thermoplastic?

• A thermoplastic is a type of plastic that can be reshaped when heated

• A thermoplastic is a type of fabric that becomes rigid at a certain temperature
• A thermoplastic is a type of glass that becomes transparent at a certain temperature
• A thermoplastic is a type of metal that becomes pliable at a certain temperature

What is a thermosetting polymer?

• A thermosetting polymer is a type of polymer that remains soft after being heated.
• A thermosetting polymer is a type of polymer that can be easily reshaped after being heated.
• A thermosetting polymer is a type of polymer that is not affected by heat.
• A thermosetting polymer is a type of polymer with crosslinks between the polymer chains that can not be reshaped when heated

Which of the following are thermoplastics?

• acrylic

• polyurethane

• nylon

• vulcanised rubber

Which of the following are thermosetting polymers?

• acrylic

• polyurethane

• nylon

• vulcanised rubber

Which of the following is most likely to be a thermosetting polymer?

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• 

Which of the following is most likely to be a thermoplastic?

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• 

Which type of plastic is most easily recycled by melting them down?

• Thermoplastics

• Thermosetting plastics

• Networked polymers

• Polystyrene

Which type of plastic are normally available as liquids or granules that form the polymer when mixed together?

• Thermoplastics

• Thermosetting plastics

• Networked polymers

• Polystyrene

Which type of polymers cannot normally be reshaped once they have been moulded, don't soften when heated and start to char or burn instead?

• Thermoplastics

• Thermosetting plastics

• Networked polymers

• Polystyrene