Download The Wonders of Water

The Wonders of Water
Interesting Facts about Water
• It is the most
abundant compound
in most living things.
• It exists naturally in all
3 states on Earth.
Water is less dense as a solid than
it is as a liquid.
• Because ice is less dense
than water, plants and
animals can survive in a
frozen lake.
The Water Molecule
A water molecule is made up of one atom of oxygen
and 2 atoms of hydrogen.
Its chemical formula is H2O
Polarity
Polarity means that there is an uneven distribution of
electrons within a molecule. Water is polar because the
electrons spend more time around the Oxygen atom then
the Hydrogen atoms.
Cohesion
• The attraction
between molecules of
the same substance.
 Water molecules are
attracted to each
other because of the
molecule’s polarity.
An Example of Cohesion
Surface Tension
Adhesion
• The attraction between molecules of different
substances.
An Example of Adhesion
• Capillary action
Solutions
• A liquid mixture in which all components are
evenly distributed.
• Solute – The substance that is dissolved.
• Solvent – The substance that dissolves
another substance.
• Water is considered the universal solvent
because it can dissolve so many other
substances due to its polarity.
Water: The Life Giving Substance