Intermediate 1 Unit 2d Plastics 123 4567 89 10 1112 13 14 151617.

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Presentation transcript:

Intermediate 1 Unit 2d Plastics

Plastics are made by the chemical industry. Are they natural or synthetic? Synthetic

What are most plastics made from? Oil

Give two examples of a plastic. Polythene, polystyrene, perspex, PVC, nylon, Kevlar, bakelite, formica and silicones

Give an advantage of a plastic over a natural material? Plastics do not rot like iron. They are lighter then most metals.

What does it mean if a material is biodegradable? Broken down by bacteria and rot away

Most plastics are non biodegradable. What does this tell us about a plastic? They do not rot/ they are not broken down by bacteria

Why is it dangerous to burn a plastic? Poisonous gases are given off. Carbon monoxide is given off.

Name the 3 ways of disposing of plastics ? Burying, burning & recycling.

What is a thermoplastic? A plastic which melts and can be reshaped on heating.

Name the process of joining up monomers to make a polymer. Polymerisation

Name the polymer made by joining ethene molecules together. Polyethene

What size is a molecule if it is a polymer? A large molecule

Name the polymer made by joining styrene molecules together. Polystyrene

Why is important to recycle plastics? They are made from oil which is a finite resource. Oil will run out.

Name the monomer which is used to make the polymer polypropene. Propene

What name is given to the small molecules used to make a polymer? Monomer

Name a toxic gas given off when a plastic is burned. Carbon monoxide

Intermediate 1 Unit 2d Plastics