Water

Water  Chemical Formula H 2 O H 2 O 2 Hydrogen Atoms 2 Hydrogen Atoms 1 Oxygen Atom 1 Oxygen Atom

Ways water is unique  Polar Molecule  Surface Tension  Capillary Action

Ways water is unique  Change in State  Universal Solvent

Polar Molecule  A molecule that has electrically charged areas

Polar Molecule  Oxygen= negative  Hydrogen= positive

Polar Molecule Many billions of water molecules Arrangement of water molecules A water molecule

Polar Molecule  Positive Hydrogen ends of 1 water molecule attract the negative oxygen ends of another water molecule  Water Molecules stick together (COHESION)

Surface Tension  Tightness across the surface of water  Caused by the polar molecules pulling on one another

Surface Tension  Causes the surface of water to be curved shape

Capillary Action  Demonstration

Capillary Action  The combined force of attraction between water molecules with the molecules of surrounding materials

Capillary Action  Causes the water inside a straw to rise higher than the water outside the straw  Causes water to move up a string or paper

Change in State  Water is the only substance on Earth that commonly exists in all of its different states!!!!

Universal Solvent  Water is able to dissolve many substances because it is polar  The charged ends of the water molecule attract the molecules of other polar substances (ADHESION)