esium chloride + hydrogen
             The Independent variable in our experiment is going to be the concentration of the hydrochloric acid.
             Concentration Hydrochloric Acid Water
             The Dependant variable in our experiment is going to be the time taken for the reaction to take place, and the amount of hydrogen given off.
             The Controlled variable in this experiment is going to be the mass of magnesium, the volume of hydrochloric acid, the same size container and the sam
             ...