Question

a student conducts an experiment to test how the temperature affects the amount of sugar that can dissolve in water. in the experiment, she uses 100 milliliters of water in each trial and stirs for five minutes each time. what is the independent variable?

○ the amount of sugar

○ the temperature of the water

○ the time stirred

○ the amount of water

Explanation:

To determine the independent variable, we recall that the independent variable is the one that is manipulated or changed to observe its effect on another variable (the dependent variable). In this experiment, the student is testing how temperature affects sugar solubility. So, temperature is the factor being changed (manipulated) to see its impact on the amount of sugar that dissolves. The amount of water and stirring time are kept constant (controlled variables), and the amount of sugar dissolved would be the dependent variable (responding to temperature changes).

Answer:

B. the temperature of the water