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Experiment to see how the quantity of marble chips affects the rate of reaction with hydrochloric acid.
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GCSE Chemistry - Experiment to see how the quantity of marble chips affects the rate of reaction with hydrochloric acid Acids undergo three main reactions: Acid + Alkali › Salt and water Acid + reactive metal › Salt and hydrogen Acid + carbonate › Salt, water and carbon dioxide I am investigating how the rate of one of these reactions is influenced by changing an external factor. External factors are things you can change in an experiment e.g. temperature, concentration, volumes, amounts and surface area. It is very important that only one external factor is altered, otherwise it is not a fair test. A fair test is when you keep all but one of the properties the same amount in each test, so you know how one particular factor affects it. If the temperature was raised, the particles would move faster, therefore they collide faster and speed up the reaction rate. If it was lowered, the...
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