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Catalysts

Catalysts. A presentation by Will Churchyard Olly Sullivan. What is a Catalyst?. A catalyst is a substance which changes the speed of a chemical reaction due to whether it is negative or positive.

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Catalysts

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  1. Catalysts A presentation by Will Churchyard Olly Sullivan

  2. What is a Catalyst? • A catalyst is a substance which changes the speed of a chemical reaction due to whether it is negative or positive. • At the end of the reaction, it is chemically unchanged, where it can be reused multiple amounts of times.

  3. What do Catalysts do? • In a reaction a catalyst can reduce the amount of energy that is active in the reaction.

  4. An example of a catalyst in use • Platinum can be used as a catalyst to make sulphur trioxide from sulphur dioxide and oxygen. The molecules of the two gases get absorbed onto the surface of the catalyst. • The two molecules are held close together, so it is quite likely for them to collide with each other and therefore react with each other. • The Sulphur Trioxide then falls off the catalyst resulting in the end product being made.

  5. Catalyst reaction

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