1. pH

2. What is pH? pH is a measure of how acidic or basic a solution is
pH of a solution is compared to the pH scale
pH Scale: Ranges from 0 to 14, a pH of less than 7 is acidic, a pH greater than 7 is basic, a pH of 7 is neutral

3. pH Scale pH 0 = Battery Acid
pH 1 = Hydrochloric Acid produced by the stomach
pH 2 = Lemon Juice, Vinegar
pH 3 = Grapefruit, Orange Juice, Soda
pH 4 = Tomato Juice, Acid Rain
pH 5 = Black Coffee
pH 6 = Urine, Saliva
pH 7 = “Pure” Water

4. pH 8 = Sea Water
pH 9 = Baking Soda
pH 10 = Milk of Magnesia
pH 11 = Ammonia
pH 12 = Soapy Water
pH 13 = Oven Cleaner
pH 14 = Liquid Drain Cleaner

5. Testing pH To test pH we can use two tests
Litmus paper
pH paper
Litmus Paper: turns red if the solution is acidic and turns blue if the solution is basic
pH Paper: changes
to a specific colour
for the pH of that
solution

6. Litmus Paper

7. pH Paper