Bicarbonates are chemical compounds that contain the bicarbonate ion, which is made up of one carbon atom, three oxygen atoms, and one hydrogen atom. They play a crucial role in maintaining the pH balance in various environments, including our bodies. For example, the bicarbonate buffer system helps regulate acidity in our blood, ensuring that it remains at a healthy level. In nature, bicarbonates are commonly found in minerals and are often present in natural waters. They can also be used in baking as a leavening agent, where they react with acids to produce carbon dioxide gas, helping dough rise. This makes baking soda, a common household item, a popular source of bicarbonates.