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In this video, you will learn about repeatable and reproducible measurements in science. One of the required practicals in GCSE science is the rates of reaction practical in chemistry, where you investigate how the rate of a chemical reaction is affected by the concentration of a reactant. An example is reacting marble chips with acid to produce carbon dioxide gas, which can be measured using an upturned measuring cylinder in a trough of water. One method is to add a certain concentration of acid to the marble chips and time how long it takes for the reaction to occur.
