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Properties of Water

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by

Narrwe Park

on 10 November 2015

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Transcript of Properties of Water

Properties of Water
The Game Plan
Denisty
1 g/cm^3

Density of water increases as water temperature decreases

BUT density decreases
when
water
freezes
Density begins to decrease specifically at 4°C
Hydrogen Bonds
Partially positive H is attracted to partially negative atom

Basically an ionic bond, but weaker

Weak on its own, but crucial for life
Cohesion/Adhesion
Cohesion: Tendency of water to stick to water

Adhesion: Tendency of substances to stick to other substances
Surface Tension
Properties
Polarity
Hydrogen bonds
Density
Cohesion/Adhesion
Surface Tension
Osmosis
Polarity
Oxygen and Hydrogen are sharing electrons (covalent bond)

Oxygen is more
electronegative
so it pulls more negative charge towards itself

Polarity makes all the difference!
Cohesion, except on the surface of water
Osmosis
Not caused by hydrogen bonds

Passive transport of water across a semi-permeable membrane

Water will always move towards area of higher solute concentration
Full transcript