Pack 14: Acids and Bases
Due:
Name:__________________________________
Date:____________
Online pH Activity
1. Go to the following website: http://www.miamisci.org/ph/
2. Click on the “Explore” Icon.
a. Use the pH Panel to test the pH of the 12 substances provided.
Record your results in the table below.
SUBSTANCE
pH
COLOR OF
LITMUS
Lemon Juice
Baking Soda
Aspirin
Ammonia
Milk of Magnesia
Lava Soap
Borax
Water
Lemon Soap
Vinegar
Tonic Water
Liquid Plumber
b. Draw a pH scale below and place the substances above in the
appropriate spots.
3. Click on the “Expand” icon.
a. Which product(s) do you predict will clean the penny the best? (Do
this first!!)
b. Test your theory by clicking on each substance and checking the
results. Complete the table below with your results.
SUBSTANCE
Baking Soda
Vinegar
Lava Soap
Lemon Juice
RESULT
c. Which product(s) cleaned the penny best? Why?
4. Click on the “Explain” icon.
a. What happens to acid when it’s poured into water?
b. What happens to base when it’s poured into water?
c. Click on the highlights ‘pH table’. Answer the following questions:
i. Do you see any patterns?
ii. Which substances would be safe to touch?
iii. Which substances would be unsafe to touch?
iv. What is the pH range of most foods?