We've added a new topic Water in How to Lose Weight

), and (invisible) water vapor in the air. Clouds are accumulations of water droplets, condensed from vapor-saturated air.]] 'Water' is a chemical substance with the chemical formula H2O. Its molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state (water va ...Water