Question

what is the independent variable in my experiment?

Answer 1

testing the freezing point of water with and without salt

Answer 2

to see which freezes faster

Answer 3

and whats the dependent variable

Answer 4

An independent variable is NOT dependent on the dependent variable.... but the dependent variable IS dependent on the independent variable. An independent variable is something you change, and the dependent variable changes because of the independent variable.
Try this website!
http://nces.ed.gov/nceskids/help/user_guide/graph/variables.asp