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The Nature Of Water. By Mary Dann . Physical Properties of Water. Water is necessary for life and is the most abundant component of living things Most marine organisms are between 70% and 80% water by mass Excellent solvent High boiling and freezing point.

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The Nature Of Water

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The nature of water
The Nature Of Water

By Mary Dann


Physical properties of water
Physical Properties of Water

  • Water is necessary for life and is the most abundant component of living things

  • Most marine organisms are between 70% and 80% water by mass

  • Excellent solvent

  • High boiling and freezing point


The nature of water


The nature of water

  • Because water molecules are polar, they have a tendency to form hydrogen bonds

  • The high boiling point of water (100⁰C) reflects the amount of energy needed to overcome the attractive forces of the hydrogen bonds

  • When water freezes the molecules move away from each other

  • Solid water (ice) is less dense then liquid water

  • This allows oceans not to freeze completely and for marine life to continue


The nature of water

  • The polar nature of water molecules also accounts for water’s solvent properties

  • Salt is a polar substance that dissolves easily in water

  • Ions are individually charged particles

  • Water is not able to dissolve molecules that are nonpolar like oils and petroleum products


The nature of water

  • Hydrogen bonds cause water molecules to be very cohesive water’s solvent properties

  • Water has a high surface tension

  • Contributes to the high boiling point of water

  • Many small organisms like water strides have adapted to using surface tension so that they can live on the surface of the water


The nature of water


The nature of water


Chemical properties of water
Chemical Properties of Water of 1 gram of a substance 1 degree C is called specific heat or thermal capacity

  • Compounds are classified as acids or bases based on how they iodize when put into water

  • Acids form hydrogen ions

  • Bases form hydroxide ions

  • pH scale is an indicator of the number of hydrogen ions in a volume of a solution

  • Ranges from 0-14


The nature of water

  • Water of 1 gram of a substance 1 degree C is called specific heat or thermal capacity

  • The End


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