Water is a chemical substance composed of two hydrogen atoms covalently bonded to one oxygen atom, represented by the chemical formula H₂O. It is a transparent, odorless, tasteless liquid at room temperature and is essential for all known forms of life. Here are some key characteristics and aspects of water: 1. **States of Matter**: Water naturally occurs in three states—liquid (water), solid (ice), and gas (water vapor or steam), depending on temperature and pressure.
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"Water" is the name for both:
- the chemical compound with chemical formula H2O
- the liquid phase of the chemical substance composed of the above chemical compound
Simplified phase diagram of water
. Source. Note the triple point and critical point visible. Phase diagrams are so cool!
water body
