1. Solutions and pH
Chapter 2

2. 1. Solution = a mixture in which one or more
Definitions:
1. Solution = a mixture in which one or more
substances is distributed in another.
2. Solute = the substance dissolved
in the solution
3. Solvent = substance in which the
solute is dissolved

3. **Acids and bases are created due to dissociation. **DISSOCIATION =
Breaking apart of water molecules
H2O = H+ and OH-
Hydrogen Ion
Hydroxide Ion

4. If the number of HYDROGEN IONS is greater than the number of hydroxide ions, the solution is an . . .
Acid
H+ > OH-

5. If the number of HYDROXIDE IONS is greater than hydrogen ions, the solution is a . . .
Base
OH- > H+

6. Scientist have developed a Scale to compare the concentration of H+ ions to OH- Ions in Solution called the pH SCALE.

7. pH Scale
Scale ranges from 0 to 14
0=more acidic
7=neutral
14= more basic

8. =Chemical substances that
Buffers
=Chemical substances that
neutralize small
amounts of
either an acid or a base