1) Hydrocarbons are molecules made from a) Hydrogen, carbon and oxygen b) Hydrogen c) Carbon d) Hydrogen and carbon only 2) Crude oil is a) A finite resource b) An infinite resource c) A fossil fuel d) An element e) A mixture of hydrocarbons f) A nuclear fuel 3) Crude oil is separated into fractions by a) Evaporation b) Crystalisation c) Chromatography d) Distillation e) Fractional distillation f) Filtering 4) Short chain hydrocarbons are more useful than long chain ones a) True b) False 5) Alkanes are a) Hydrocarbons with single carbon-carbon bonds b) Hydrocarbons with double carbon-carbon bonds c) Hydrocarbons with some single and some double carbon-carbon bonds 6) Methane is an alkane with a) One carbon atom b) Two carbon atoms c) Three carbon atoms d) Four carbon atoms 7) Butane is an alkane with a) One carbon atom b) Two carbon atoms c) Three carbon atoms d) Four carbon atoms 8) How many covalent bonds can a carbon atom form? a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 9) Cracking produces long hydrocarbons from short ones a) True b) False 10) Fractional distillation separates hydrocarbons based on a) Melting point b) Saturation point c) Boiling point d) Critical point

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