16.State the independent variable if you're investigating the effect of pH on the time taken for iodine to remain yellow.
Question
16.State the independent variable if you're investigating the effect of pH on the time taken for iodine to remain yellow.
Solution
The independent variable in this investigation would be the pH. This is because you are changing the pH to see how it affects the time taken for iodine to remain yellow. The independent variable is the one that you manipulate or change in an experiment to test its effects on the dependent variable, which in this case is the time taken for iodine to remain yellow.
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