A compound ion formed when a water molecule releases a proton.
Common salt is dissolved by water: polar water molecules form a coat around the ions.
The solution of hydrogen chloride in water is called hydrochloric acid.
Knallgas is the mixture of hydrogen and oxygen. It will explode when ignited.
The dissolution of zinc in hydrochloric acid produces hydrogen gas.
Water is a very stable compound of hydrogen and oxygen, vital for all known forms of life. In nature it occurs in liquid, solid and gaseous state.
Colourless, odourless, lighter-than-air gas. The most common chemical element in the universe.
A colourless, odourless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.
Potassium permanganate is used as a disinfectant.