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Water is Unique! Whoa!. Water is Unique! Called The Universal Solvent because it can dissolve almost anything. Only substance found naturally in all 3.

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Presentation on theme: "Water is Unique! Whoa!. Water is Unique! Called The Universal Solvent because it can dissolve almost anything. Only substance found naturally in all 3."— Presentation transcript:

1 Water is Unique! Whoa!

2 Water is Unique! Called The Universal Solvent because it can dissolve almost anything. Only substance found naturally in all 3 states (solid, liquid, gas). Freezes at __ degrees F Boils at ___ degrees F. 32 212

3 Its solid form is less dense than its liquid form & so ice floats. This allows many marine organisms to survive through the winter when the top of the ocean freezes. It has a high heat capacity (absorbs a lot of heat before it gets hot). Very high surface tension (that’s why water clumps together in drops rather than spreading out in a thin film)

4 Cohesion Water molecules are attracted to other water molecules because… Water is a ______________ Oxygen end has a (-) charge & the Hydrogen end has a (+) charge. The positive end of one water molecule is attracted to the negative end of other water molecules. POLAR MOLECULE

5 Surface Tension Cohesion at the surface of a body of water causes the water to pull itself into a shape with the smallest surface area (a sphere). All the water molecules on the surface are holding each other together (think about Red Rover). Watch ‘em go!

6 Adhesion Water is attracted to other polar molecules.

7 Capillary Action Movement of water within the spaces of a porous material due to the forces of adhesion and cohesion.

8 Heat Transfer Heat is transferred in 3 ways:Heat is transferred in 3 ways: Conduction – direct contact by a solidConduction – direct contact by a solid Convection – heat rises in fluids b/c ofConvection – heat rises in fluids b/c of changes in density Radiation – transported through rays.Radiation – transported through rays. This is cool!


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