5 Questions
What is the chemical formula of water?
H2O
What percentage of the Earth's surface is covered by water?
71%
In what forms does water exist on Earth?
Solid, liquid, gas
What does the chemical formula H2O indicate about water's molecular composition?
One oxygen and two hydrogen atoms connected by covalent bonds
What is the name of the liquid state of H2O at standard temperature and pressure?
Water
Study Notes
Water Basics
- The chemical formula of water is H2O.
- Approximately 71% of the Earth's surface is covered by water.
Forms of Water
- Water exists on Earth in three main forms: solid (ice), liquid (water), and gas (water vapor).
Molecular Composition
- The chemical formula H2O indicates that one molecule of water consists of two hydrogen atoms and one oxygen atom.
States of Water
- The liquid state of H2O at standard temperature and pressure is simply referred to as water.
Test your knowledge of water's chemical properties, importance in the environment, and role as a solvent in living organisms.
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