Experiments can be used to identify causal relationship, something that is difficult or impossible to do with other methods. 3. Why are control groups used in experiments? What do they do for you? The ...
An international team of scientists led by Dr. Lukas Bruder, junior research group leader at the Institute of Physics, ...
When carrying out the experiment, care has to be taken that other variables that affect the rate of reaction, such as concentration of reactants, are kept constant. These are control variables.
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