The aim of the investigation is to see how different concentrations of Hydrochloric acid affect the rate at which hydrogen gas is produced when it is reacted with a strip of magnesium. The rate of a reaction is a measure of change that happens in a single unit of time. When a chemical reaction takes place the particles of the reactants collide. The more often the particles collide the more likely they are to react …showed first 75 words of 2195 total…

…showed last 75 words of 2195 total…so that this mass can be then taken away from the final results. As the experiment would goes on the mass would get lighter because the hydrogen gas is escaping and when the time is over, take away the end mass from the mass of the reaction at the beginning and plot a graph of the difference. The rate of reaction should work out to be the same and this would be the further evidence.