Even carbon dioxide can dissolve in the groundwater, causing the water to be naturally carbonated. This water is sometimes sold as mineral water. Groundwater can be heated by magma below the Earth's surface. The heated water can create hot springs, springs with water that is naturally hot (Figure 13.23). Some hot springs are used as natural hot tubs and are considered therapeutic and spiritual by some people. However, hot springs can be dangerous, too.
We used a level tablespoon of salt in a cup of water. The batteries we have shown here are more correctly called cells. An actual battery is made up of two or more cells. The zinc-air cell produces about three quarters of a volt.
Rating Newest Oldest. Best Answer: The battery is a chemical power house. the plates are made of lead (Pb) and Lead Oxide (PbO) the acid is H2SO4 sulphuric acid. A charged battery has only H2SO4 (sulphuric acid) and lead plates Pb. As you use the battery, a chemical reaction occurs. Pb + HSo4 -> PbSO4 + H + freeing 2 electrons.