1. Acids and Bases
Otherwise known as pH!

2. pH Scale A system of classifying how acidic or basic something is
(Base)

3. Reminder!
*Ion – an atom that has gained or lost electrons

4. “pH”iguring out the pH Scale
*pH – a measure of the concentration of hydrogen ions in a solution

5. Acids
Substances that release hydrogen ions (H+) when dissolved in water
The more H+ ions released, the more acidic the solution becomes

6. Bases
Substances that release hydroxide ions (OH-) when they are dissolved in water
The more hydroxide ions a substance releases, the more basic (alkaline) the solution becomes

7. Neutral pH 7 (pure water)
Equal amount of hydrogen ions (H+) and hydroxide ions (OH-)

8. Neutral
*pH = the chemical potential of Hydrogen

10. pH and You!
Most biological processes carried out by cells occur between pH 6.5 and 7.5 (so the body can maintain homeostasis!)
Examples:
Antacids are *buffers that react with acids or bases to maintain a particular pH in your stomach
Blood contains buffers to maintain a pH of approximately 7.4 (acidosis and alkalosis)