11.8. Polymers
A subsection of Chemistry, 0620, through 11. Organic chemistry
Listing 10 of 208 questions
Coal gas is made by heating coal in the absence of air. The list shows the main gases present in coal gas. carbon dioxide carbon monoxide ethene hydrogen methane nitrogen Which one of these gases is an alkane? Draw the structure of a molecule of ethene. Show all of the atoms and all of the bonds.  Describe how aqueous bromine can be used to tell the difference between methane and ethene. Ethene molecules react with each other to form poly. What is the name given to this type of chemical reaction? Which one of the following words describes the ethene molecules in this reaction? Draw a circle around the correct answer. elements mixtures monomers polymers  Polyis a non-biodegradable plastic. What is meant by the term non-biodegradable? Describe one pollution problem caused by non-biodegradable plastics. Ethanol can be made from ethene and one other reactant. ● ● Name the other reactant. ● ● State the conditions needed to make ethanol from ethene.  
0620_s19_qp_31
THEORY
2019
Paper 3, Variant 1
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Methane, ethane and ethene are hydrocarbons. Draw the structure of a molecule of ethane. Show all of the atoms and all of the bonds.  Which one of these compounds belongs to the same homologous series as methane? Draw a circle around the correct answer. butane methanoic acid methanol propene  Ethene can be manufactured by cracking. Complete the sentence about cracking using words from the list. atoms ions larger molecules reactive smaller Cracking is the process of breaking down ……………. alkane ……………… into ………… alkanes and alkenes.  State two conditions needed for cracking.  Polyis made by the polymerisation of ethene. Which one of the structures represents part of a polymolecule? Tick one box. C CH3 H C H H C CH3 C H H H C C H C C H H H C H C H H H C C H H H H C CH3 H C H OH OH C CH3 C H H  Nylon is also a polymer. Give one common use of nylon. Part of the structure of nylon is shown. C (CH2)4 (CH2)6 O C O N H N H N H How many different types of atom are shown in this structure? The structure of a monomer used to make a polymer is shown. C C O O C CH3 H H H What structural feature of this molecule shows that it is unsaturated? Describe a test to show that this compound is unsaturated. test observations  
0620_s19_qp_32
THEORY
2019
Paper 3, Variant 2
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Two hydrocarbons have the structures shown. C H H H H C H H C H hydrocarbon A hydrocarbon B C H C H H C H H H H H H H H H H C C C C Why are these two compounds hydrocarbons? HydrocarbonB reacts in the same way as a typical alkane. Describe a chemical test to tell the difference between hydrocarbonA and hydrocarbonB. State the name of the reagent you would use and the result you would obtain with hydrocarbonA and hydrocarbonB. reagent result with hydrocarbon A result with hydrocarbon B  Alkenes react with steam to form alcohols. CompoundC is an alcohol. C H H H H C H H C H H C H H O compound C Draw the structure of the alkene which could be reacted with steam to make compoundC. Show all of the atoms and all of the bonds.  Alkenes can form polymers. What type of polymerisation occurs when alkenes form polymers? Part of the structure of a polymer is shown. C CH3 CH3 CH3 CH3 H C H C CH3 CH3 H C H C H C H Draw the structure of the alkene from which this polymer can be made. Show all of the atoms and all of the bonds.  Polymers can undergo incomplete combustion to form carbon monoxide. Complete the chemical equation for the incomplete combustion of poly. The only carbon‑containing product is carbon monoxide. n C H H C + O2 + 2n H2O H H  Part of the structure of a polyamide is shown. O C O C H N O C H N H N This polyamide is formed from identical monomers. Complete the diagram to show the structure of one monomer. Show all of the atoms and all of the bonds.  
0620_s19_qp_43
THEORY
2019
Paper 4, Variant 3
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Part of the synthetic polymer, nylon, is shown in the diagram. C O C O C C O O N H N H N H N H C O Circle one amide linkage on the diagram. Complete the structures of the two monomers that react to form nylon.  Name the other product formed when nylon is produced. Items made from nylon are often disposed of by burying them in the ground. This is called landfill. Why is the disposal of nylon using landfill a problem? Give the name of a natural polymer. 
0620_s20_qp_43
THEORY
2020
Paper 4, Variant 3
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Questions Discovered
208