Water Chemistry By: Dawn Bodinski

The States of Water 3states: solid liquid gas

Water Density Most liquids contract (get smaller) when colder. Water is different. contracts until it reaches 4 ⁰C expands until solid. Solid less dense than liquid ICE FLOATS!

Cohesion Water is attracted to other water. cohesion.

Cohesive properties Surface tension name given to the cohesion of water molecules at the surface of a body of water. allows water striders to 'skate' across the top of a pond.

Adhesion Water can also be attracted to other materials. adhesion.

Adhesive properties Capillary action like water rising in a straw Plants use this to pull water from the ground From the roots water is drawn through the plant by another force, transpiration.

Shape Bent Causes polarity (-) end (+) end

Polarity O2 end (-) charge H end (+) charge. HYDROGEN BONDING The attraction between the + and – ends MAGNETS

Thermal Properties Slow to heat up Slow to cool down takes a lot of energy to raise temperature Makes great coolant Slow to cool down takes a lot of time to release energy Makes great insulator

Universal Solvent can & will dissolve MOST everything (Grand Canyon)

Universal Solvent How it dissolves Polarity Disassociates atoms: SEPARATES THEM