An acid is a type of chemical, which dissolves in water to form hydrogen, receive electrons, or react with bases to form a salt. Many specifications are specified by many sources as to what defines acids.
Because of Chemophobia, acids are becoming harder to find. Still, they can be found for their consumer use with ease. The most common acids bought are Acetic acid as vinegar, Sulfuric acid as drain cleaner, and Hydrochloric acid as muratic acid.
Acids can be prepared by reacting a salt with a stronger acid. A common reaction is the production of Hydrochloric acid from Sulfuric acid and salt. This reaction, along with most other reactions of this type, require (heat) energy to happen. They are usually done in a boiling flask or distillation rig.
Acids can be dangerous. They can, in high concentrations, dissolve things not meant to be dissolved, like skin, hair, or finger nails. Hydrofluoric acid will quickly be absorbed through skin and can cause painless burns and will react with the calcium from the body, although the negative effects appear after a period of time. Some pure acids, such as perchloric acid and hydrazoic acid are know to spontaneously explode, so they must be stored as diluted solutions.