<p> CHEMISTRY Y12 Production of Materials CLOZE PASSAGE No 2 Complete the following sentences using appropriate words or short phrases a) Polymers are …………… molecules made up of ………………..units called monomers Large , Repeating Condensation b) A polymer formed by the polymerisation involving the elimination of H O is called a 2 polymer c) The polymer PET stands for. Polyester d) Synthetic condensation polymers are usually made from how many types of monomers 2 f) The name of the functional group COOH is Carboxyl g) Polyester is made from 1,2-ethanediol and what other polymer? Terephthalic acid Polyester is made into clothing fibres which go under the trade names of D…………… Dacron and h) and T………………………… Terylene i) The functional group in ethanediol is called the …………………… group Hydroxyl j) Give the name of a polyamide you have studied Nylon k) Two polysaccarides you have studied are starch and ………………………… Cellulose l) Most polymers are produced by living things and are called ………………….. Biopolymers m) Give an example of a naturally occurring biopolymer beginning with the letter “P” Protein</p><p> n) NH2 is the functional group called an ……………………… Amide or Amine o) Cellulose is made of monomers called Glucose p) Cellulose is the main constituent of plant cell ……………… Walls q) The total mass of all organisms is called its Biomass r) Natural sources of cellulose include C……………….,F…………..and H…………. Cotton,Flax,Hemp If biopolymers, rather than the petrochemical industry, could be used as the feed stock s) Renewable for the making of plastics then unlike fossil fuels this would be a ……………resource Cellulose acetate or t) The first commercially produced plastic made from cellulose was called. Celluloid u) Give the name of the biopolymer that you have researched Polylactic acid v) Name the enzyme or organism used to synthesise the above biopolymer Lactobacillus Photodegradable plastics will be broken down by …………………. and biodegradable UV light, living w) means they will be broken down by ………………. ………………….. organisms x) Many local councils now actively promote the …………………….. of plastics Recycling</p><p> y) The molecular formula for glucose is C6H12O6 z) A recycle code of 6 means the plastic is made from Polystyrene</p>