Question

Janet learned in science class that the amount of salt that can dissolve in a certain amount of water depends on the temperature of the water. she decides to do an experiment to test this. she carefully adds salt, 100 mg at a time, to a cup of water and stirs until all the salt dissolves. when she has added so much salt that it will not dissolve after 5 minutes, she measures the temperature of the water. she records the temperature and the final amount of salt. she does this with cold water, cool water, room-temperature water, warm water, and hot water. what is the test variable (independent variable) in this experiment?

Answer 1

The independent variable in this experiment is temperature, since it is the factor being changed.

Answer 2

The independent variable in this experiment is temperature, since it is changing and the independent variable always changes.

Step-by-step explanation:

Independent variable something that you change

Dependent variable something that you measure

Constant variable something that stays the same.