8.4+The+pH+scale

Learning Goals: (1 hour)
 * Distinguish between aqueous solutions that are acidic, neutral or alkaline using the pH scale.
 * Identify which of two or more aqueous solutions is more acidic or alkaline using pH values.
 * State that each change of one pH unit represents a 10-fold change in the hydrogen ion concentration [H+(aq)].
 * Deduce changes in [H+(aq)] when the pH of a solution changes by more than one pH unit.