Answer to Question #200623 in Chemistry for Aaliyah Perez

Question #200623

A yellow candle light goes out when a glass jar is inverted over it. It is hypothesized that air is necessary for burning and such more air will sustain the flame for a longer period of time. Assuming you decided to test the hypothesis, identify the independent variable.

A.Color of the candleB.TimeC.Glass jarD.Volume of airE.Flame

Expert's answer

An independent variable is changed by the experimenter to measure the effect of this change on the dependent variable.

According to the hypothesis, the burning depends on the amount of air. As a result, the volume of air is the independent variable that is changed during the experiment to measure time of burning (dependent variable).

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