Based on our observations from the Zinc and Hydrochloric Acid Lab, we concluded that the chemical reaction that occurred was exothermic and a single displacement reaction. The experiment consisted of zinc (Zn) and hydrochloric acid (HCl) being mixed in a test tube immersed in water. First of all, bubbles were produced during the reaction. Also, a white powdery substance was produced with properties different from those of any reactant. The bubbles suggest that the reaction was a chemical reaction as bubbles indicate a formation of gas, and the formation of gas is a sign of a chemical reaction. Moreover, a new substance was produced, evidence that a chemical reaction occurred. Additionally, in the lab, we recorded the temperature of the water
