Chemistry-C10-Ceramics, Composites, Polymers 0.0 / 5 ? ChemistryPolymersGCSEAQA Created by: tonisha_Created on: 21-03-23 19:46 Most glass that we use is called? soda lime glass 1 of 39 What three things do we mix? sand sodium carbonate limestone 2 of 39 What do we then do to the mixture? heat it 3 of 39 However this glass has a what? low melting point 4 of 39 This limits? its uses 5 of 39 What type of glass has a higher melting point than soda lime glass? borosilicate 6 of 39 What two things is it made of? sand and boron trioxide 7 of 39 How are clay ceramics made? shape wet clay and heat it in a furnace 8 of 39 Composites are made of _ materials? 2 9 of 39 What are those two? reinforcement surrounded by matrix or binder material 10 of 39 What are examples of reinforcements? fibres or fragments of one material 11 of 39 A composites properties depends on what? the properties of the materials it was made with 12 of 39 What are three examples of composites? carbon fibre composite concrete wood 13 of 39 What is the reinforcement of a carbon fibre composite? fibres of carbon 14 of 39 What is the matrix? plastic resin 15 of 39 What are its two properties? strong and light 16 of 39 Concrete is made from a mixture of sand and gravel called? aggregate 17 of 39 Wood is made from what fibres? cellulose 18 of 39 And has a matrix made of? organic polymer 19 of 39 A polymer is made from joining together a large number of what? monomers 20 of 39 The properties of a polymer depend on what two things? the monomer its made from the conditions used to make it 21 of 39 What two types of poly (ethene) are there? low density high density 22 of 39 Low density poly(ethene) is made from ethene at what type of temperature? moderate 23 of 39 And under what type of pressure? high 24 of 39 What properties will it have? soft flexible 25 of 39 High density poly(ethene) is made from ethene at what type of temperature? low 26 of 39 What pressure? low 27 of 39 What else does it involve? catalyst 28 of 39 What are its properties? hard rigid 29 of 39 Therefore what three things can we change to change a polymers properties? pressure temperature catalyst 30 of 39 What two types of polymers are there? thermosoftening thermosetting 31 of 39 What do thermosoftening polymers do when we heat them? melt 32 of 39 This is because they have _____ ______ forces between the ______ strands because they have weak intermolecular forces between the polymer strands 33 of 39 We can then ______ the polymer? reshape 34 of 39 When we cool them down? they go back to solid 35 of 39 Thermosetting polymer do what when we heat them? do not melt 36 of 39 This is because thermosetting polymers have very strong what? crosslinks between polymer strands 37 of 39 These are not broken by? heat 38 of 39 Therefore their shape is what? strong rigid hard 39 of 39
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