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Cracking molecules and plastics chemistry gcse ask. After the fractional distillation of crude oil there are too many large hydrocarbons and not enough small hydrocarbons to meet the publics demand. The pearson edexcel level 1level 2 gcse 91 in combined science is designed for use in schools and colleges. I have an odd curvature of my neck where when i sit it bends inwards too much making more of a c shape then a shape. Petrol and other fuels are produced from it using fractional distillation and cracking. In cracking you always make and alkene and an alkanethermal crackingthis is. Edexcel have made a new science and additional science specification starting from november 2011 and onward.
Cracking can be done by various methods including catalytic cracking. Footprintsscience gcse science animations and quizzes. How to pass the new 2011 to 2014 edexcel gcse science. Calculator, ruler 5ch1h01 additional sample assessment material time. The process is known as catalytic cracking because it only happens in the presence of a catalyst substance which speeds up the reaction without being used up itself.
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