What is the functional group of an alkene?

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2. What is cracking?

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3. Recall a use for each of the 6 fractions obtained from the fractional distillation of crude oil

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4. What does the following diagram represent?

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5. This diagram shows one repeat unit of a polymer. Name the monomer used to make this polymer.

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6. Explain the term hydrocarbon

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7. Bromine is added to a sample of an alkane and also to a sample of an alkene. Describe the result of each.

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8. In what type of reaction is an atom or group of atoms added to a molecule without taking anything away?

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9. State the general formula of alkanes

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10. Give two reasons why addition polymers are hard to dispose of

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11. Describe, in terms of structure and bonding, what happens when ethene molecules are converted into poly(ethene)

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12. What is crude oil?

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13. Explain why cracking is an important process in the oil industry

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14. Name this molecule

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15. A student has been asked to draw all the alkene isomers of C₄H₈ and draws the following. Which of the following statements about the student's diagram is correct?

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16. Explain the term functional group

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17. What are the two products of the reaction between methane and bromine? (2)

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18. Explain the term saturated

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19. What is the molecular formula for butene?

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20. State the general formula for alkenes

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21. What is the molecular formula for pentane?

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22. Explain the term unsaturated

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23. 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?

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24. Why does incomplete combustion occur?

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25. Explain how crude oil is separated into fractions

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26. Recall all the possible products of the incomplete combustion of alkanes

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27. State the colour change in the reaction of an alkene with bromine water

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28. What is a substance called if it, when burned, releases heat energy?

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29. What is meant by the term viscosity?

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