1) A hydrocarbon contains the elements ... a) hydrogen, carbon and water b) water and carbon c) hydrogen and carbon 2) The general formula for alkanes is… a) CnHn+2 b) CnH2n+2 c) CnH2n+4 3) The first 3 alkanes are methane, ethane and propane. What is the 4th alkane? a) octane b) butane c) hexane 4) Are alkenes saturated or unsaturated molecules? a) saturated b) unsaturated 5) The correct displayed formula for ethane is ... a) b) c) 6) The equation for complete combustion is… a) methane + oxygen = methene + carbon dioxide b) methane + oxygen = hydrogen + carbon dioxide c) methane + oxygen = carbon dioxide + water 7) The general formula for alkenes is… a) CnH2n+4 b) CnH2n c) CnH2n+2 8) What type of hydrocarbons contain double bonds? a) alkenes b) alkanes 9) What happens to bromine water when added to an alkene? a) it turns from colourless to brown b) nothing c) it turns from brown to colourless 10) The displayed formula for ethene is… a) b) c)

Organic chemistry quizz

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