1. Properties of Water

2. Polarity Poles of Charge
O: slight negative charge
H: slight positive charge poles of charge.
Hydrogen Bonds - the partial positive and negative charges attract and create a weak bond

3. Special Properties of H20
Cohesion - an attraction between molecules of the same substance
Insects and spiders walking on the surface of ponds.
Adhesion - an attraction between molecules of different substances
Capillary action of drawing water from the roots to the leaves of plants.

4. Solutions and Suspensions
Mixtures: composed of two or more elements or compounds that are physically mixed together but not chemically combined
- earth atmosphere, sweet tea, salt and pepper

5. Solutions and Suspensions
Solution - evenly distributed components
solute - the substance that is dissolved
solvent - the substance that dissolves the solute
Suspensions - mixtures of water and nondissolved materials
blood

6. Acids, Bases, and pH
pH scale: a measurement system to indicate H+ ions; scale runs 1 to 14
Acid: forms H+ ions in solution
pH < 7
Base: produces OH- ions in solutions
Alkaline
pH > 7
buffer - are weak acids or bases that react with strong acids or bases to prevent sharp, sudden changes in pH