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Definition of Water molecule

Water molecule Definition from Society & Culture Dictionaries & Glossaries
Environmental Engineering (English ver.)
The smallest unit of water (chemical symbol H2O); consists of two atoms of Hydrogen (chemical symbol H) and one atom of Oxygen (chemical symbol O).
Water molecule Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
Water is the most abundant compound on Earth's surface, covering 70 percent of the planet. In nature, water exists in liquid, solid, and gaseous states. It is in dynamic equilibrium between the liquid and gas states at standard temperature and pressure. At room temperature, it is a tasteless and odorless liquid, nearly colorless with a hint of blue. Many substances dissolve in water and it is commonly referred to as the universal solvent. Because of this, water in nature and in use is rarely pure and some properties may vary from those of the pure substance. However, there are also many compounds that are essentially, if not completely, insoluble in water. Water is the only common substance found naturally in all three common states of matter and it is essential for all life on Earth. Water makes up 55% to 78% of the human body.

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