Alkenes & Polymers quiz Loading... 1. Why are alkanes classified as saturated hydrocarbons?They are usually solids at room temperatureThey contain only single bondsThey are toxic substancesThey do not react easilyQuestion 1 of 29 Loading... 2. What is the name of this molecule?ethenepentenepropenebuteneQuestion 2 of 29 Loading... 3. When long chain alkanes are cracked, what is produced?Shorter chain alkenes onlyShorter chain alkenes and hydrogenShorter chain alkanes onlyShorter chain alkanes and alkenesQuestion 3 of 29 Loading... 4. 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 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. 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 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 4 of 29 Loading... 5. 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. The molecule on the right is just normal butane. Bending the end round doesn't change that.The student is wrong. There is another isomer called 1,2-dimethylethane.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.Question 5 of 29 Loading... 6. Write a chemical equation for the complete combustion of propaneC₃H₈ + 5O₂ → 3CO₂ + 4H₂OC₃H₈ + 10O₂ → 3CO₂ + 4H₂OC₃H₈ + 5O₂ → 3CO₂ + 8H₂OC₃H₈ + 10O₂ → 3CO₂ + 8H₂OQuestion 6 of 29 Loading... 7. State the general formula for alkenesCₙHₙ₊₁CₙH₂ₙ₊₂ CₙHₙCₙH₂ₙQuestion 7 of 29 Loading... 8. What is a substitution reaction?A reaction where an atom or group of atoms is replaced by a different atom or group of atomsA reaction where an atom or group of atoms is added to a moleculeA reaction where a double bond breaks to form a long chain of moleculesA reaction where an atoms of a group of atoms is removed from a moleculeQuestion 8 of 29 Loading... 9. Explain the term unsaturatedA molecule containing only single bondsA poisonous moleculeA compound that is a liquid at room temperatureA molecule containing a carbon-carbon double or triple bondQuestion 9 of 29 Loading... 10. Why does incomplete combustion occur?When there is reduced fuel avaliableWhen the fuel is wetWhen there is an insufficient supply of waterWhen there is an insufficient supply of oxygen for complete combustionQuestion 10 of 29 Loading... 11. Name this moleculemethylbutanebut-2-enemethylpropane1,1 dimethylpropaneQuestion 11 of 29 Loading... 12. State the names and molecular formulae of the first 5 alkanesmethane (CH₄), ethane (C₂H₆), tritane (C₃H₈), butane (C₄H₁₀), pentane (C₅H₁₂)methane (CH₄), ethane (C₂H₆), propane (C₃H₈), butane (C₄H₁₀), pentane (C₅H₁₂)methane (CH₄), ethane (C₂H₆), propane (C₃H₈), quatane (C₄H₁₀), pentane (C₅H₁₂)methane (CH₄), ethane (C₂H₆), tritane (C₃H₈), tetrane (C₄H₁₀), pentane (C₅H₁₂)Question 12 of 29 Loading... 13. Explain what an addition polymer isAn addition polymer is a long chain alkane found in crude oilAn addition polymer is a large molecule made by adding many small molecules (each containing a double bond) together to form one much larger moleculeAn addition polymer is a long chain containing alternating double and single bondsAn addition polymer is a compound made from an alcohol and a carboxylic acidQuestion 13 of 29 Loading... 14. What is a substance called if it, when burned, releases heat energy?An electrolyteA coalA fuelA fossil fuelQuestion 14 of 29 Loading... 15. What is meant by the term biodegradable?Toxic to the environmentAble to be broken down by UV radiationPersists in the environmentAble to be broken down by microorganismsQuestion 15 of 29 Loading... 16. Bromine is added to a sample of an alkane and also to a sample of an alkene. Describe the result of each.With the alkane, no change (stays colourless). With the alkene, changes from colourless to orangeWith the alkane, changes from orange to colourless. With the alkene, no change (stays orange) With the alkane, changes from colourless to orange. With the alkene, no change (stays colourless) With the alkane, no change (stays orange). With the alkene, changes from orange to colourlessQuestion 16 of 29 Loading... 17. This diagram shows one repeat unit of a polymer. Name the monomer used to make this polymer.tetrafluoroethenepolyfluoroethenefluoroethanefluoroetheneQuestion 17 of 29 Loading... 18. Recall a use of refinery gasesFuel for carsFuel for aeroplanesCookingFuel for lorriesQuestion 18 of 29 Loading... 19. Which fraction of crude oil is the most viscous?BitumenKeroseneFuel oilRefinery gasesQuestion 19 of 29 Loading... 20. Explain why cracking is an important process in the oil industryCracking 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 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 20 of 29 Loading... 21. A pupil has tried to write down various ways of representing butane using: molecular formula, displayed formula, general formula, empirical formula and stuctural formula. However she has missed one out. Which one?general formulastructural formulaempirical formulamolecular formulaQuestion 21 of 29 Loading... 22. What is crude oil?A mixture of alcoholsA mixture of hydrocarbonsA mixture of alkanesAn oily liquidQuestion 22 of 29 Loading... 23. What are isomers?Atoms with the same number of protons but different numbers of neutronsSolutions with the same ratio of ions but different concentrationsMolecules with the same molecular formula but with a different structureCompounds with the same empirical formula but different molecular formulasQuestion 23 of 29 Loading... 24. When lots of these molecules have their double bond broken and they all join together into a long chain, what is the new molecule called?polychloroethanepolytetrachloroethenechloroethenepolychloroetheneQuestion 24 of 29 Loading... 25. Explain the term hydrocarbonA hydrocarbon is a molecule that is in a homologous seriesA hydrocarbon is a molecule containing only hydrogen and carbonA hydrocarbon is an organic moleculeA hydrocarbon is a molecule that comes from crude oilQuestion 25 of 29 Loading... 26. What is the functional group of an alkene?>C-C< (a carbon-to-carbon single bond)>C-NH₂< (A carbon to nitrogen bond)>C-OH< (a carbon to OH bond)>C=C< (a carbon-to-carbon double bond)Question 26 of 29 Loading... 27. What are the two products of the reaction between methane and bromine? (2)Bromomethane (CH₃Br) and hydrogen bromide (HBr)Bromoethane (C₂H₅Br) and hydrogen bromide (HBr)Bromomethane (CH₃Br) and hydrogen (H₂)Bromoethane (C₂H₅Br) and hydrogen (H₂)Question 27 of 29 Loading... 28. What is produced when an alkene reacts with bromine?A dibromoalkaneA bromoalkane and hydrogen bromideA dibromoalkane and hydrogenA dibromoalkene and hydrogen bromideQuestion 28 of 29 Loading... 29. What is the name of this molecule?butanepropanepropenebuteneQuestion 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! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail