IGCSE CHEMISTRY EDEXCEL (9-1) -Mr. EHAB FAROUK 0097455339573

1- Addition Polymerisation Formation of poly (tetrafluoroethene) tetraflouroethene Poly(tetrafluoroethene)

1- Addition Polymerisation Uses of poly (tetrafluoroethene) Pol(tetrafluoroethene) is used as non-stick coating for pots and pans Explain: Pol(tetrafluoroethene) is unreactive. Because of the strong carbon-fluorine bonds so, can be used as lining containers for corrosive chemicals

1- Addition Polymerisation What are the repeat unit and monomer of the following polymer? Repeat unit monomer

Disposal of addition polymers Explain: Recycling of plastics is important. 1- They save raw material. 2- they take very long time for addition polymers to break down in the environment. Explain: some addition polymers are non-biodegradable. Because they cannot be broken down by bacteria in the environment. Explain: addition polymers are inert at ordinary temperature. Because they contain strong covalent bond.

Most polymers are hard to get rid of 1- Bury them in landfill site : but they will still for years. 2- Incinerate (Burning) Plastics (some countries use it to generate electricity as it release a lot of heat energy: But it release toxic gases

Most polymers are hard to get rid of

2- Condensation Polymerisation It is the formation of polymer by elimination of small molecule as water

2- Condensation Polymerisation Making polyester

2- Condensation Polymerisation Making polyester

What is repeat unit of the following polymer? Repeat unit

Thank you Mr. EHAB FAROUK 0097455339573