Most polymers are made from - raw materials from crude oil, Polymers are formed by - joining lots of small molecules together, Polymers are often elastic which means - they return to their original shape after stretching, Poly(ethene) is useful for shopping bags - because it is strong and flexible, The polymer structure is made up of long-chain molecules - with repeating groups of atoms, Rubber is an example of - a natural polymer, The long ‘bendy’ molecules - mean that most of them are flexible, Some examples of synthetic polymers are - poly(vinylchloride) and poly(propene), The small molecules used to make polymers - are called monomers, Poly(vinylchloride) is used for electrical cables - because it is flexible and an insulator, This diagram shows polymer chains that will melt when heated., This diagram shows polymers with cross-links between chains,

Polymers

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?