Question

You wish to investigate whether the rate of stirring a solid affects how fast it dissolves in
water
Write a hypothesis for the investigation
6 Identify the variable to change and the variables to keep constant​

Answer 1

Answer:

The dependent variables are the things that the scientist focuses his or her observations on to see how they respond to the change made to the independent variable. ... Controlled variables are quantities that a scientist wants to remain constant, and she or he must observe them as carefully as the dependent variables.