Question

variables hw check
a class investigates how temperature affects the rate that sugar dissolves in water. they place identical amounts of sugar into three beakers of water different temperatures: cold, room temperature, and hot. they time how long it takes the sugar to dissolve.
amount of sugar
room temperature group
temperature of water
time for sugar to dissolve
independent variable
control group
dependent variable
constant

Explanation:

In an experiment, the independent variable is what is changed (water temperature here). The dependent variable is what is measured (time for sugar to dissolve). The control group is a standard for comparison (room - temperature group). Constants are kept the same (amount of sugar).

Answer:

Amount of sugar - Constant
Room temperature group - Control group
Temperature of water - Independent variable
Time for sugar to dissolve - Dependent variable