National 5 Chemistry - Unit 3 - Plastics

What term means "does not break down in the environment"

• biodegradeable
• non-degradeable
• corrosive
• biodegenerative

Which is the most common material used to make plastics

• Natural gas

• Crude oil

• Coal

Which statement defines a polymer?

• A polymer is a very large, chain-like molecule made up of polymers, which are large molecules.

• A polymer is a very small, chain-like molecule made up of monomers, which are large molecules. It can only be synthetic.

• A polymer is a very large, chain-like molecule made up of monomers, which are small molecules. It can be naturally occurring or synthetic.

Reheating a __________ plastic component will cause the forces between the molecules to become weaker which allows them to slip over each other - the component can be reshaped or become mis-shaped in use if it becomes too hot.

• thermoplastic

• thermosetting plastic

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D