How many hydrogen atoms are present in a single molecule of water?

A single molecule of water, represented chemically as H₂O, contains two hydrogen atoms. The molecular formula indicates that for every one oxygen atom, there are two hydrogen atoms. This composition is fundamental to understanding the structure of water, which is essential in various disciplines, including chemistry and environmental science.

Water's unique properties, such as its solvent capabilities and high heat capacity, are closely related to the ratio of hydrogen to oxygen atoms in its molecules. The presence of two hydrogen atoms allows water to form hydrogen bonds, which are crucial for its role in supporting life and various ecological processes. Understanding the composition of water molecules is important for a water operator, as it underlies many topics such as water quality management and treatment processes.