chemistry department waid academy plastics. most plastics are made from chemicals obtained from...
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![Page 1: CHEMISTRY DEPARTMENT WAID ACADEMY Plastics. Most plastics are made from chemicals obtained from 1.biogas 2.plant material 3.crude oil 4.natural gas 20](https://reader036.vdocuments.us/reader036/viewer/2022080915/56649e1b5503460f94b0a15e/html5/thumbnails/1.jpg)
CHEMISTRY DEPARTMENT
WAID ACADEMY
Plastics
![Page 2: CHEMISTRY DEPARTMENT WAID ACADEMY Plastics. Most plastics are made from chemicals obtained from 1.biogas 2.plant material 3.crude oil 4.natural gas 20](https://reader036.vdocuments.us/reader036/viewer/2022080915/56649e1b5503460f94b0a15e/html5/thumbnails/2.jpg)
Most plastics are made from chemicals obtained from
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1. biogas
2. plant material
3. crude oil
4. natural gas
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Which three materials are all plastics?20
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1. Wool, Nylon and PVC
2. Polythene, Formica and PVC
3. Cotton, Polystyrene and Bakelite
4. Silk, PVC and Nylon
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If a material is described as being biodegradable it can be
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1. broken down by bacteria in the soil and rot away.
2. softened by heating.
3. disposed of by burning.
4. easily moulded into different shapes.
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Most burning plastics produce 20
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1. sulphur dioxide
2. nitrogen dioxide
3. hydrogen
4. carbon monoxide
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A thermoplastic is a plastic material which
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1. burns without producing toxic fumes.
2. can be broken down by bacteria in the soil.
3. can be reshaped on heating.
4. does not soften on heating.
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Electrical plugs and sockets are made from plastics which are
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1. thermosetting plastics.
2. thermoplastic plastics.
3. biodegradable plastics.
4. made from PVC
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Plastics are made up of long chain molecules called
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1. monomers.
2. polymers.
3. residues.
4. Fractions.
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The process of joining many small molecules together to make a plastic is called.
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1. recycling.
2. incineration.
3. monomerisation
4. polymerisation.
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The small molecules which are joined together to make plastics are called
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1. plastimers.
2. monomers.
3. polymers.
4. elastomers.
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Recycling of plastics can be difficult because
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1. most plastics burn.
2. plastics are not widely used.
3. plastics are non-biodegradable.
4. there are many different types of plastic in common use.