Water Properties. Water Molecules Water is a __________________________________ That means even though the electrons are shared, the oxygen molecule holds.

Water Properties

Water MoleculesWater is a

__________________________________That means even though the electrons are

shared, the oxygen molecule holds onto them and only shares a little with the hydrogen molecules

The _______________________________________The _______________________________________

Water MoleculesThe bond angle between the hydrogen

molecules is ______________

Hydrogen BondingForces of attraction between water

moleculesReason water has it’s unique properties

Liquid WaterWater is a liquid over a large range of

temperaturesHas a high boiling point_________________________________If water had a lower boiling point, what

would have happened to the lakes and oceans?

Liquid WaterIt takes a lot of energy to raise the

temperature of waterStores a lot of energy in the bonds

without raising the temperature muchThis helps moderate Earth’s climate

Evaporating WaterWater absorbs a large

amount of heat as it changes into water vapor

Evaporation is a _______________ process

Heat is released when vapor condenses

This helps distribute heat around the world

Water as a _______________Water is able to dissolve many compoundsCarries nutrients through organismsGreat as a cleanerRemoves and dissolves wastesMakes water easily pollutable

Water as a _______________Water filters UV lightWhy there is no light at depthFilters out harmful UV rays

pH of WaterWater is usually

neutral with a pH of _________

Dissolved substances change the pH of water

Bottled waters tend to be more acidic

Surface TensionAllows the surface of water to resist an

outside forceAllows bugs and some smaller reptiles to

walk/ run on the surface of the water

Cohesion and AdhesionCohesion: attractive forces between water

molecules, __________________________________

Adhesion: attractive forces between water molecules and other molecules, ________________ ___________________

Capillary ActionWater rises in a narrow tube against the

force of gravityCollective action of cohesion, adhesion,

and surface tensionAllows water move up xylem in plants

Water as a SolidWater _______________ as it

________________Allows ice to float on water because it has

a lower densityWhat would happen to fish if lakes froze

solid in the winter?