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Pregunta
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Respuesta correcta
|
What are polymers? :
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Large molecules made of many monomers |
What is the origin of synthetic plastics? :
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Petroleum, natural gas and carbon |
What is the process that transforms raw materials into plastics? :
|
Polymerisation |
Which plastic is very impact-resistant and used as a substitute for glass? :
|
Polycarbonate |
Which type of plastic cannot be remoulded once it has cooled? :
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Thermoset plastic |
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Pregunta
|
Respuesta correcta
|
Which of the following is a natural elastomer? :
|
Latex |
Which technique is used to manufacture plastic bottles? :
|
Blow moulding |
Which material is made from clay and baked in a kiln? :
|
Ceramic |
Which stone material is waterproof and mainly used for roofs? :
|
Slate |
Approximately what percentage of plastic is collected for recycling? :
|
14% |
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