POWER+POINTS

The Universal Solvent...WATER

A FEW KEY POINTS: Contributes to the fitness of the environment (supports life) Life probably evolved in water Living cells 75% to 95% H2O Covers about 3/4 of Earth Water exist in all three state of matte

DEVELOP EXPLANATIONS What are properties of a polar molecule:

Explain the term Asymmetrical shape:

What type of Bond does electron sharing:

How properties result in cohesive behavior:

Why doe water expands when it freezes:

VOCABULARY: Build definitions for the following words: Cohesion

Adhesion

Mixture

Solution

Solute

Solvent

Suspension

pH scale

acid

Base

Buffer

Surface tension

Specific heat

Hydrophobic

Hydrophilic

Aqueous solution