How many hydrogen atoms and oxygen atoms are in a water molecule?

A water molecule is composed of two hydrogen atoms and one oxygen atom, which is represented chemically as H2O. This structure is fundamental to understanding the properties and behavior of water in various physical and chemical processes.

In more detail, the molecular formula H2O indicates that for every one molecule of water, there are two hydrogen atoms (H) covalently bonded to a single oxygen atom (O). The unique arrangement of these atoms contributes to water's characteristics, such as its high surface tension and the ability to dissolve many substances.

Recognizing the correct composition of water is essential in many fields, including biology, chemistry, and environmental science, as it lays the groundwork for understanding reactions involving water, hydration of cells, and its role in various ecosystems.