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Lesson 1 - Water - Coggle Diagram
Lesson 1 - Water
Water as a Solvent
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Water would only dissolve polar substances, due to the hydrophilic/hydrophobic interactions. Polar molecules and ions are attracted to water molecules are referred to as hydrophilic.
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Thermal Energy
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In addition to the high specific heat capacity, water also has a rather high heat of vaporization value.
This can allow living organisms to help maintain a constant body temperature due to the high specific heat capacity.
In addition, this allows water to act as a cooling agent especially in the form of sweat which dissipates heat.
Solutions
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The surface coat of water reduces the forces of attraction between the ions or the polar molecules of the solute.
This in turn promotes the separation of the ions or molecules by the water molecule.
As the ions or molecules dissociate the water molecules surround the ion or molecule forming a hydration shell.
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Hydrogen Bonding
Hydrogen bonding is one of the strongest types of intermolecular forces that can hold molecules together in a particular arrangement.
Hydrogen bonding can only occur with molecules of which a hydrogen atom is bonded directly to a fluorine atom, an oxygen atom or a nitrogen atom.
Water can form intermolecular bonds with other polar molecules. The ability to form these interactions allow water to act as a solvent.
Surface Tension
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Since the water molecules are incapable of forming hydrogen bonds with air molecules and in turn creates an imbalance.
The water molecules on the surface creates a tension and makes the molecules at the surface more resistant to separation.
Water as a Lubricant
Water can act as a lubricant by maintaining the optimum levels of moisture in certain areas of the body.
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