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Questions and Answers
What is the chemical formula of water?
What is the chemical formula of water?
- HCl
- CO2
- H2O (correct)
- NaCl
What is the angle between the hydrogen atoms and the oxygen atom in a water molecule?
What is the angle between the hydrogen atoms and the oxygen atom in a water molecule?
- 104.45° (correct)
- 180°
- 90°
- 120°
What percentage of Earth's surface is covered by water?
What percentage of Earth's surface is covered by water?
- 50%
- 71% (correct)
- 80%
- 65%
In what forms does water exist on Earth due to its relatively close environment to the triple point?
In what forms does water exist on Earth due to its relatively close environment to the triple point?
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What is the name of the liquid state of H2O at standard temperature and pressure?
What is the name of the liquid state of H2O at standard temperature and pressure?
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Study Notes
Water Facts
- The chemical formula of water is H2O.
- The angle between the hydrogen atoms and the oxygen atom in a water molecule is 104.5 degrees.
- Approximately 71% of Earth's surface is covered by water.
Forms of Water on Earth
- Due to its relatively close environment to the triple point, water exists on Earth in three main forms: solid (ice), liquid (water), and gas (water vapor).
- The liquid state of H2O at standard temperature and pressure is simply known as water.
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