Cracking 0.0 / 5 ? ChemistryCrude oil, cracking and hydrocarbonsGCSEAQA Created by: maisiegulCreated on: 05-05-16 17:24 What is cracking? Cracking is when large chains of hydrocarbon molecules are broken down into smaller, more useful ones 1 of 6 What are the two ways that cracking can happen? Heating the hydrocarbon vapours and steam to a high temperature and by passing hydrocarbon vapours over a hot catalyst 2 of 6 What sort of reaction is cracking? Thermal Decomposition 3 of 6 What are alkenes? Unsaturated hydrocarbons with a double carbon-carbon bond 4 of 6 Why are alkenes more reactive than alkanes? Because of their double carbon-carbon bonds 5 of 6 What is the test to identify an alkene? It reacts turning bromine water orange to colourless 6 of 6
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