Properties of Water

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

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.

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

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

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