Name ___________________________________
Date________________
Acid/Base Virtual Lab
Go to: http://www.glencoe.com/sites/common_assets/science/virtual_labs/E22/E22.html
Read the introduction and answer the following questions:
1. What does the pH of a solution measure?
2. How does pH paper help to determine the pH?
3. What is the range of the pH scale?
4. What is the pH of an acid?
5. What is the pH of a base?
6. What is the pH of a neutral substance?
Write down the pH and the color of the paper for the following substances you tested.
Decide if the substance is acidic/basic or neutral.
Substance
pH
Color
Acid/Base/Neutral
1. Battery acid
_________________________________________________________
2. Oven Cleaner
_________________________________________________________
3. Lemon juice
_________________________________________________________
4. Shampoo
_________________________________________________________
5. Vinegar
_________________________________________________________
6. Sea Water
_________________________________________________________
7. Soft drink
_________________________________________________________
8. Antacid
_________________________________________________________
9.
_________________________________________________________
Tomatoes
10. Stomach Acid
_________________________________________________________
11. Orange Juice
_________________________________________________________
12. Pure Water
_________________________________________________________
13. Antacid
_________________________________________________________
Go to phet: ph Scale
http://phet.colorado.edu/sims/html/ph-scale/latest/ph-scale_en.html
Click on the tab labeled, “Micro”
Experiment with each solution. Notice what happens to the bar graph as the pH
changes. Record the following:
pH
[H3O+]
[OH-]
1. Drain cleaner
_____________________________________________________________
2. Hand soap
___________________________________________________________
3. blood
__________________________________________________________
4. spit
__________________________________________________________
5. water
__________________________________________________________
6. milk
__________________________________________________________
7. coffee
__________________________________________________________
8. beer
__________________________________________________________
9. soda pop
__________________________________________________________
10.vomit
__________________________________________________________
11. battery acid
__________________________________________________________
Make a custom liquid and write down the following:
pH
[H3O+]
[OH-]
1. What is the relationship between the concentration of the hydronium and hydroxide
ion and pH in any water solution?
2. If a solution is neutral, how many hydronium ions are present?
3. If a solution is neutral, how many hydroxide ions are present?