John wants to measure the impact the amount of baking soda has on the explosion level in a baking soda and vinegar volcano. He places 20ml of
vinegar inside a volcano and then adds 1 tablespoon of baking soda. He
measures the amount of liquid that explodes from the volcano. Next, he
cleans the volcano and then repeats the experiment, but this time he adds
20ml of vinegar inside the volcano and adds 2 tablespoons of baking soda.
He once again measures the amount of liquid that explodes from the
volcano.
A. What is the independent variable:

B. What is the dependent variable:

C. What are three constants from the experiment: