All of these compounds form acids when mixed with water.

The gas combines with water in blood to form carbolic acid.

These compounds may also form acids by reacting with moisture.

This in turn may be oxidized to form sulfuric acid.

All of the halogens form acids when bonded to hydrogen.

Plaque bacteria will act on sugars to form acids which attack the tooth surface.

It is caused by defects in a biotin-dependent reaction that forms 3-methylglutaconic acid.

When exposed to air and water, the pyrite forms sulfuric acid.

This gets the oil hot enough to evaporate any moisture that reacts to form acids in the engine.

It also reacts with water to form acetic acid.