Alkenes & Polymers quiz Loading... 1. Why are alkenes classified as unsaturated hydrocarbons?They contain multiple double or triple bondsThey contain a double or triple bondThey contain only single bondsThey contain only hydrogen and carbonQuestion 1 of 29 Loading... 2. Explain how crude oil is separated into fractionsCrude oil is separated by fractional distillation. Crude oil is heated and the oil evaporates. It then goes into the tower. As the vapours rise up the tower the temperature rises. Different sized fractions condense at different heights because they have different boiling points. Smaller molecules condense high up in the tower. Larger molecules condense low down in the tower. Then the fractions are collected.Crude oil is separated by fractional distillation. Crude oil is heated and the oil evaporates. It then goes into the tower. As the vapours rise up the tower the temperature falls. Different sized fractions condense at different heights because they have different boiling points. Smaller molecules condense high up in the tower. Larger molecules condense low down in the tower. Then the fractions are collected.Crude oil is separated by fractional distillation. Crude oil is heated and the oil evaporates. It then goes into the tower. As the vapours rise up the tower the temperature falls. Different sized fractions condense at different heights because they have different boiling points. Larger molecules condense high up in the tower. Smaller molecules condense low down in the tower. Then the fractions are collected.Crude oil is separated by fractional distillation. Crude oil is heated and the oil evaporates. It then goes into the tower. As the vapours rise up the tower the temperature rises. Different sized fractions condense at different heights because they have different boiling points. Larger molecules condense high up in the tower. Smaller molecules condense low down in the tower. Then the fractions are collected.Question 2 of 29 Loading... 3. Recall all the possible products of the incomplete combustion of alkanesHydrogen, carbon monoxide and waterCarbon, carbon monoxide, carbon dioxide and waterCarbon dioxide and waterCarbon monoxide, carbon dioxide and waterQuestion 3 of 29 Loading... 4. What does the following diagram represent?but-2-enebut-1-enepolybut-2-enepolybut-1-eneQuestion 4 of 29 Loading... 5. What is the name of this molecule?ethenepentenepropenebuteneQuestion 5 of 29 Loading... 6. Recall a use of dieselSurfacing roadsFuel for lorriesFuel for shipsFuel for carsQuestion 6 of 29 Loading... 7. Explain the term homologous seriesA homologous series is a family of compounds with 1) the same general formula 2) similar chemical properties 3) trends in their physical propertiesA homologous series is a family of compounds with 1) a trend in general formula 2) trends in their chemical properties 3) similar physical propertiesA homologous series is a family of compounds with 1) the same general formula 2) trends in their chemical properties 3) similar physical propertiesA homologous series is a family of compounds with 1) a trend in general formula 2) similar chemical properties 3) the same physical propertiesQuestion 7 of 29 Loading... 8. What is crude oil?A mixture of alcoholsA mixture of hydrocarbonsAn oily liquidA mixture of alkanesQuestion 8 of 29 Loading... 9. Write the chemical equation for the reaction between methane and bromineC₂H₆ + Br₂ → C₂H₄Br₂ +H₂C₂H₆ + Br₂ → C₂H₅Br +HBrCH₄ + Br₂ → CH₃Br +HBrCH₄ + Br₂ → CH₂Br₂ +H₂Question 9 of 29 Loading... 10. This diagram shows one repeat unit of a polymer. Name the monomer used to make this polymer.pent-1-enepolypentenepent-4-enepent-2-eneQuestion 10 of 29 Loading... 11. State the conditions for the cracking of hydrocarbonsManganese oxide catalyst heated to 200°CAluminium oxide catalyst heated to 200°CManganese oxide catalyst heated to 600°CAluminium oxide catalyst heated to 600°CQuestion 11 of 29 Loading... 12. Explain what a monomer is Monomers are the many small molecules (such as ethene) which add together to make a polymerMonomers are the long chain molecules produced in a polymerisation reactionMonomers are the products of cracking long chain alkanesMonomers are the small molecules released in a polymerisation reactionQuestion 12 of 29 Loading... 13. State the names and molecular formulae of the first 5 alkanesmethane (CH₄), ethane (C₂H₆), propane (C₃H₈), butane (C₄H₁₀), pentane (C₅H₁₂)methane (CH₄), ethane (C₂H₆), tritane (C₃H₈), tetrane (C₄H₁₀), pentane (C₅H₁₂)methane (CH₄), ethane (C₂H₆), propane (C₃H₈), quatane (C₄H₁₀), pentane (C₅H₁₂)methane (CH₄), ethane (C₂H₆), tritane (C₃H₈), butane (C₄H₁₀), pentane (C₅H₁₂)Question 13 of 29 Loading... 14. What is combustion?Combustion is breaking down a substance, and often occurs with heatCombustion is burning a substance, and is a reaction with oxygenCombustion is oxidising a substance, and is a reaction with carbonCombustion is dissolving a substanceQuestion 14 of 29 Loading... 15. What is a substance called if it, when burned, releases heat energy?A coalA fossil fuelAn electrolyteA fuelQuestion 15 of 29 Loading... 16. What is a general formula?A series of compounds with similar chemical properties and a trend in physical propertiesA formula to show the relative quantity of different types of atom for a molecules in a homologous series. Eg CₙH₂ₙ₊₂ for alkanes A formula to determine the structure of a general series, i.e it shows which isomers are part of the general series and which aren\'tA formula to determine the exact number of different types of atom in a molecule, e.g. C₂H₄ for etheneQuestion 16 of 29 Loading... 17. What is used to test if something is an alkane or and alkene?StarchSilver nitrateBenedict\'s reagentBromine waterQuestion 17 of 29 Loading... 18. Give two reasons why addition polymers are hard to dispose ofThey are inert as they have strong C-C bonds. This makes them non-biodegradeable. Also, they produce toxic gases when burned.They are inert as they have strong C-C bonds. This makes them biodegradeable. Also, they produce toxic gases when burned.They are inert as they have weak C-C bonds. This makes them biodegradeable. Also, they produce toxic gases when burned.They are inert as they have weak C-C bonds. This makes them non-biodegradeable. Also, they produce toxic gases when burned.Question 18 of 29 Loading... 19. A student has been asked to draw all the alkene isomers of C₄H₁₀ and draws the following. Which of the following statements about the student's diagram is correct?The student is wrong because she makes no reference to the numbers of protons and neutrons in the molecules.The student is correct and deserves a tuck-shop voucher.The student is wrong. There is another isomer called 1,2-dimethylethane.The student is wrong. The molecule on the right is just normal butane. Bending the end round doesn't change that.Question 19 of 29 Loading... 20. Why does incomplete combustion occur?When there is reduced fuel avaliableWhen the fuel is wetWhen there is an insufficient supply of oxygen for complete combustionWhen there is an insufficient supply of waterQuestion 20 of 29 Loading... 21. What is the name of this molecule?ethanemethaneethanoletheneQuestion 21 of 29 Loading... 22. Name this moleculebut-2-enebutane2-methylpropenepolybut-1-eneQuestion 22 of 29 Loading... 23. Explain the term hydrocarbonA hydrocarbon is a molecule that comes from crude oilA hydrocarbon is a molecule containing only hydrogen and carbonA hydrocarbon is an organic moleculeA hydrocarbon is a molecule that is in a homologous seriesQuestion 23 of 29 Loading... 24. Of which homologous series is >C=C< (a carbon-to-carbon double bond) the functional group?AlcoholsAlkanesAlkenesHydrocarbonsQuestion 24 of 29 Loading... 25. State the general formula for alkenesCₙH₂ₙ₊₂ CₙH₂ₙCₙHₙCₙHₙ₊₁Question 25 of 29 Loading... 26. Explain why cracking is an important process in the oil industryCracking converts long chain hydrocarbons into short chain hydrocarbons. Crude oil contains a surplus short chains. Shorter chain hydrocarbons are in less demand, e.g. petrol. Cracking also produces alkenes which are used in making polymers and ethanol.Cracking converts long chain hydrocarbons into short chain hydrocarbons. Crude oil contains a surplus long chains. Shorter chain hydrocarbons are in greater demand, e.g. petrol. Cracking also produces alkenes which are used in making polymers and ethanol.Cracking converts long chain hydrocarbons into short chain hydrocarbons. Crude oil contains a surplus long chains. Shorter chain hydrocarbons are in less demand, e.g. petrol. Cracking also produces alkenes which are used in making polymers and ethanol.Cracking converts long chain hydrocarbons into short chain hydrocarbons. Crude oil contains a surplus short chains. Shorter chain hydrocarbons are in greater demand, e.g. petrol. Cracking also produces alkenes which are used in making polymers and ethanol.Question 26 of 29 Loading... 27. Describe the trend in boiling points of the main fractions in crude oilBoiling point increases as the viscosity decreasesBoiling point increases as the viscosity increasesBoiling point increases as the number of carbon atoms (chain length) increasesBoiling point increases as the number of carbon atoms (chain length) decreasesQuestion 27 of 29 Loading... 28. Explain the term saturatedA molecule containing only single bondsA molecule that will not react with anythingA molecule that is usually a solid at room temperatureA molecule that is poisonousQuestion 28 of 29 Loading... 29. When bromine is added, what happens to an alkene?Nothing (the sample remains orange)The sample turns from colourless to orange.The sample turns from brown to orange.The sample turns from orange to colourless.Question 29 of 29 Loading... Related Posts:The entire quiz question bank!The entire quiz question bank (Double only)!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quiz Hydr0Gen2020-02-16T15:14:58+00:00Categories: Uncategorized|Tags: Quiz, Topic: Alkenes & Polymers| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail