Copper ii chloride reacts with aluminum foil in an exothermi - GED Practice Questions
Question
Copper II chloride reacts with aluminum foil in an exothermic reaction. An experiment is performed to determine the optimal surface subsequent energy released. Results of the experiment are shown in the table.
What is the independent variable in this experiment?
Answers
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Explanation
Correct Answer: D.
The independent variable in an experiment is the variable that is changed or controlled by the experimenter to test its effects on the dependent variable. In the context of this experiment where the aim is to determine the optimal surface for subsequent energy release, the independent variable is the surface area of the aluminum foil. Changes in the surface area of the aluminum could affect the rate and extent of the reaction, thereby impacting the amount of energy released, which is observed and measured.
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