1. Highlight as we go over them
Notes to Summarize 8.4
Highlight as we go over them

2. The pH scale pH scale goes from 0-14
Acids have LOW pH (more H3O+ in solution)
Bases have HIGH pH (more OH- in solution)
pH of 7 means the solution is NEUTRAL

3. The pH Scale

4. Strong Acids and Bases
Strong acids almost completely ionize when you add them to a solution
Strong bases dissociate almost completely when you add them to a solution
There are very few strong acids and bases

6. Weak Acids and Bases
Weak acids and bases only ionize or dissociate a little
Most things are a weak acid or base

8. Buffers Buffers resist changes in pH
They are able to react with BOTH acids and bases
Buffers are very important to the human body

9. Electrolytes
Electrolyte – a substance that ionizes or dissociates into ions when dissolved in water
All acids, bases, and salts are electrolytes
Sports drinks contain electrolytes

10. Interesting to know... Sweat contains the following electrolytes:
Sodium
Potassium
Calcium
Magnesium
Chloride
Bicarbonate
Phosphate
Sulphate
If you lose too many, your body can’t function

11. Which is better a sports drink or water?
What do you think?
It actually depends on the type of exercise you are doing...
For most people, water is better
For extended periods of intense exercise, sports drinks are better