Alkanes & Crude Oil quiz Loading... 1. Why is carbon dioxide, CO₂ harmful to the environment?It competes with oxygen for uptake in plants preventing them from photosynthesisingIt is acidic and can change the pH of fresh and salt water when dissolvedIt is a greenhouse gas and may contribute to global warmingIt is very slightly coloured and blocks sunlight in the atmosphere if too much builds upQuestion 1 of 22 Loading... 2. What is crude oil?A mixture of alkanesA mixture of alcoholsA mixture of hydrocarbonsAn oily liquidQuestion 2 of 22 Loading... 3. Explain the term homologous seriesA homologous series is a family of compounds with 1) a trend in general formula 2) similar chemical properties 3) the same 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) similar chemical properties 3) trends in their physical propertiesA homologous series is a family of compounds with 1) the same general formula 2) trends in their chemical properties 3) similar physical propertiesQuestion 3 of 22 Loading... 4. 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 correct and deserves a tuck-shop voucher.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.Question 4 of 22 Loading... 5. Recall a use of refinery gasesFuel for aeroplanesFuel for lorriesCookingFuel for carsQuestion 5 of 22 Loading... 6. Why can nitrogen react with oxygen in a car engine?The metals in the engine act as a catalyst for the reactionThe temperature is very highThe pressure is very highBecause the gases are very volatileQuestion 6 of 22 Loading... 7. Explain why carbon monoxide is dangerous to humansIt is poisonous because it reduces the capacity of the blood to carry oxygenIt is poisonous because it blocks blood flowIt is poisonous because it poisons the bloodstreamIt is poisonous because it blocks surfaces for gas exchangeQuestion 7 of 22 Loading... 8. State the general formula of alkanesCₙH₂ₙC₂ₙH₂ₙ₊₂ CₙHₙ₊₁CₙH₂ₙ₊₂ Question 8 of 22 Loading... 9. Name this moleculemethyl propaneprop-1-enedimethyl ethanebutaneQuestion 9 of 22 Loading... 10. What is a substance called if it, when burned, releases heat energy?A fossil fuelA coalA fuelAn electrolyteQuestion 10 of 22 Loading... 11. Write a chemical equation for the complete combustion of propaneC₃H₈ + 5O₂ → 3CO₂ + 8H₂OC₃H₈ + 5O₂ → 3CO₂ + 4H₂OC₃H₈ + 10O₂ → 3CO₂ + 8H₂OC₃H₈ + 10O₂ → 3CO₂ + 4H₂OQuestion 11 of 22 Loading... 12. Write the chemical equation for sulfur dioxide dissolving in water to form acid rainSO₂ + H₂O → H₂SO₃SO₂ + 2H₂O → H₂SO₄ + H₂2SO₂ + 2H₂O → 2H₂SO₂ + O₂ SO₂ + H₂O → H₂SO + H₂O₂ Question 12 of 22 Loading... 13. Explain why nitrogen gas, N₂, is a gas at room temperatureNitrogen has a simple molecular structure with weak intermolecular forces that require little energy to overcomeNitrogen has a giant covalent structure with many strong covalent bonds which require a lot of energy to overcomeNitrogen has a giant covalent structure with many weak covalent bonds which require little energy to overcomeNitrogen has a simple molecular structure with strong intermolecular forces that require a lot of energy to overcomeQuestion 13 of 22 Loading... 14. A pupil has tried to write down various ways of representing ethane using: molecular formula, displayed formula, general formula, empirical formula and stuctural formula. However she has missed one out. Which one?structural formulageneral formulamolecular formulaempirical formulaQuestion 14 of 22 Loading... 15. Explain the term hydrocarbonA hydrocarbon is a molecule that is in a homologous seriesA hydrocarbon is a molecule that comes from crude oilA hydrocarbon is a molecule containing only hydrogen and carbonA hydrocarbon is an organic moleculeQuestion 15 of 22 Loading... 16. What is the name of the process in which crude oil is separated into its various components?FiltrationCrystallisationFractional distillationSimple distillationQuestion 16 of 22 Loading... 17. Why is the boiling point of a larger molecule higher than that of a smaller molecule?Larger molecules have more attractions between them. These take less energy to overcome.Larger molecules have fewer attractions between them. These take more energy to overcome.Larger molecules have fewer attractions between them. These take less energy to overcome.Larger molecules have more attractions between them. These take more energy to overcome.Question 17 of 22 Loading... 18. How does sulfur dioxide form in car engines?Petrol includes the impurity sulfur, and when the petrol combusts some sulfur dioxide is formedThe metals the car is made from contain some impurities of sulfur and when the engine heats up, some sulfur dioxide is formedWhen the petrol combusts the sulfur dioxide impurities are left behindAcid rain causes some sulfur impurities to get into the car engine, and when the petrol combusts some sulfur dioxide is formedQuestion 18 of 22 Loading... 19. What does volatile mean? Which fraction of crude oil is the most volatile?If a substance is volatile it doesn\'t flow easily. Bitumen is the most volatile fraction of crude oil.If a substance is volatile it doesn\'t flow easily. Refinery gas is the most volatile fraction of crude oil.If a substance is volatile it evaporates easily. Refinery gas is the most volatile fraction of crude oil.If a substance is volatile it evaporates easily. Bitumen is the most volatile fraction of crude oil.Question 19 of 22 Loading... 20. Why are alkanes classified as saturated hydrocarbons?They are usually solids at room temperatureThey do not react easilyThey contain only single bondsThey are toxic substancesQuestion 20 of 22 Loading... 21. What is the molecular formula for propane?C₅H₁₀C₅H₁₂C₃H₈C₃H₆Question 21 of 22 Loading... 22. What do each of the following state symbols represent: (s), (l), (g), (aq)(s) - solution. (l) - liquid. (g) - gas. (aq) - water(s) - solid. (l) - liquid. (g) - gas. (aq) - water(s) - solid. (l) - liquid. (g) - gas. (aq) - aqueous (in solution)(l) - solid. (g) - liquid. (s) - gas. (aq) - aqueous (in solution)Question 22 of 22 Loading... Related Posts:The entire quiz question bank!The entire quiz question bank (Double only)!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quiz Hydr0Gen2020-02-16T16:34:17+00:00Categories: Uncategorized|Tags: Quiz, Topic: Alkanes & Crude Oil| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail