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Aqa gcse chemistry hydrocarbons.
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- 1what is cracking?the reaction used in the oil industry to break down large hydrocarbons into smaller, more useful ones.
- 2Explain the ways cracking can be done?cracking can be done in 2 ways:
1) By heating a mixture of hydrocarbon vapours and steam to a very high temperature.
2) By passing hydrocarbon vapours over a hot catalyst - 3What reaction is cracking?Thermal Decompositon
- 4Alkanes are...Saturated hydrocarbons
- 5Alkenes are...Unsaturated hydrocarbons.
- 6What is the test for unsaturated hydrocarbons?Unsaturated hyrdrocarbon+ Bromine water- colourless solution
- 7What is the test for saturated hydrocarbons?saturated hydrocarbons+ Bromine water- orange (no reaction)
- 8What does cracking produce?Cracking produces saturated hydrocarbons which are used as fuels
- 9How is ethene made into poly(ethene)?When alkene molecules join together, the double bond between the carbon atoms in each molecule "opens up". It is replaced by single bonds as thousands of molecules join together. this reaction is called polymerisation.
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- Fichas sobre Aqa gcse chemistry hydrocarbons., creado por Marya Shamim el 28/03/2015.
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- Marya Shamim
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