Water

Water is a transparent, tasteless and odourless chemical substance made of hydrogen and oxygen (H2O). It is essential to all known forms of life.

Properties

Water exists as a solid (ice), a liquid and a gas (water vapour). It is often called the "universal solvent" because it dissolves many substances.

Importance

Water covers most of the Earth's surface and makes up a large part of living bodies. It is vital for drinking, farming, industry and the natural water cycle.

Frequently asked questions

What is water made of?

Hydrogen and oxygen (H2O).

Why is water important?

All known life depends on it.