C2 - Material Choices - Revision

Key words revision for module C2 - 21st Century Science - higher tier.
What S is a way of using a resource that prevents it running out?. What S means 'man made'?. What R is the unprocessed material needed to make something?. What C is raw material for synthetic polymers?. What H is the main material in crude oil?. What D is the energy and space needed for in the last stage of a materials life?. What P is joining long molecules together?. What V uses cross-linking to make a polymer stronger?. What D means 'long lasting'?. What C is a structure with regularly packed molecules, creating high density and strength?. What does the L stand for in LDPE?. What N is unit of length about the size of a molecule?. What C is the type of force that squashes?. What F changes when plasticizers are added?. What K is a synthetic fibre five times stronger than steel?. What L is where most materials currently end up?. What I is one way to dispose of waste materials?. What D is the number of atoms in an area or the number of grams per cubic centimetre?. What B describes polymer chains in a low density material?. What R can be used to recover raw materials from waste and reduce energy consumption?.

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