Ice cube experiment controlled variable?

I'm doing a science experiment in which i have 3 ice cubes and put salt over one of them, sugar over one of them, and nothing over one of them and then measure the time or rate it takes to melt the ice cube.


is this a controlled experiment and what would be the responding and controlled variable?


Thanks in advance!Ice cube experiment controlled variable?
Yes, you are controlling all but one factor. For instance you are not heating one of them while letting the others thaw out naturally in addition to the conditions you've specified. That would not be controlled. It is controlled since you are varying one factor. The responding variable is the time it takes for each ice cube to melt, but this is due to the one variable you changed, which is the addition of a substance to the ice cube. The controlled variable is the ice cube. You are using the same identical ice cube in each of the three situations, and are comparing it to the control--which is the ice cube that has no substance added to it. Hope this helps.