As each decade goes by, the penny is getting more expensive to make. A penny is worth more than a penny doesn’t make sense, so it’s been converted into an alloy of copper and zinc. As shown in the nanoscopic drawing of 1982 penny, it is structured with zinc in the center of the penny coated with a thin layer of copper. By filing the penny, the zinc will be exposed to the hydrochloric acid and will react based on the balanced equation: Zn(s) + 2 HCl(aq) -> ZnCl2(aq) + H2(q) . The equation states how once zinc and the acid reacted with each other, it forms into hydrogen gas. and zinc chloride in aqueous form, meaning it dissolved in the solution, as shown in the diagram to the right. Cooper will only be left since Cu(s) + HCl(aq) -> No Reaction,
