N4 Chemistry Plastics Revision

Plastics are long chain molecules called?

(a)  

Plastics are made through a _____________ reaction

• polymerisation

• evaporation
• oxidation
• combustion

Polymerisation is what type of reaction?

• Reduction

• Addition

• Hydrolysis

• Combustion

Polymers are made from a series of ...?

• atoms
• isotopes
• monomers
• compounds

Plastics are harmful when they burn because

• They release toxic fumes and chemicals
• They have no impact on the environment
• They produce clean and fresh air
• They release unpleasant aroma and fragrance

Ethene forms the polymer ...

• Polyethene

• Polyvinylchloride
• Polystyrene
• Polypropylene

What type of plastics can be reshaped after heating?

• Thermoplastics

• Thermosetting Plastics

What type of plastics cannot be reshaped after heating?

• Thermoplastics

• Thermosetting Plastics

Part of the structure of a polymer is shown. The monomer used to make this polymer is

• 
• 
• 
• 

Answer explanation

Monomers contain a double bond.

A co-polymer is formed when two different monomers polymerise.

Part of the structure of a co-polymer, showing three monomer units, is given below.

One of the monomers used is propene.

Identify the other monomer.

• Pent-2-ene

• Pent-1-ene

• But-2-ene

• But-1-ene