When free energy is released during a chemical reaction it is called what of below an endothermic reaction
an isothermic reaction
an endergonic reaction
an exergonic reaction
a nuclear reaction

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.