GCSE chemistry coursework: Collision Theory
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GCSE chemistry coursework: Collision Theory Introduction This coursework is based on testing Collision Theory, which is the theory used to predict the rates of chemical reactions. The Collision Theory is based on the assumption that for a reaction to occur it is necessary for the reacting species (atoms or molecules) to collide with one another. However not all collisions bring about a chemical change. A certain amount of energy is needed to produce a chemical change so the reaction must be orientated in a manner favourable to the necessary rearrangement of atoms and electrons. Some reactions take a lot of energy to start (a good example of this being a nuclear reaction). There are a number of ways, in which you can help the reaction take place such as heating it up, changing the surface area, changing the pressure, changing the concentration or by adding a catalyst. Here is a more...

