Bubbles Lab
Hypothesis:
If I blow (add CO2) to sea water, then it will change the pH (acidity).
Materials Checklist:
Pre- lab questions:
1. What gas are you blowing into the water?
*CO2 Carbon Dioxide.
2. What happens to the gas when you blow it into the water?
*it absorbs or dissolves into water.
3. How are you measuring change in the water during this lab?
pH Scale.
4. What does measuring the pH of the water tell us?
the acidity of a matter
5. After studying the reactions above, how do you think carbonic acid will affect the pH of salt
water?
make it more acidic, more hydrogen ions.
If I blow (add CO2) to sea water, then it will change the pH (acidity).
Materials Checklist:
- 100 mL Saltwater
- Thermometers
- 500 mL beakers
- Hot Plate
- straws
- Ice Bath
- timer
- Tap water
- disposable pipet
- 100mL Saltwater with indicator solution
- 0.6mL tube with 0.2mL of (to compare before/after)
- universal indicator solution
- Safety Goggles (1/student) and/or Parafilm
Pre- lab questions:
1. What gas are you blowing into the water?
*CO2 Carbon Dioxide.
2. What happens to the gas when you blow it into the water?
*it absorbs or dissolves into water.
3. How are you measuring change in the water during this lab?
pH Scale.
4. What does measuring the pH of the water tell us?
the acidity of a matter
5. After studying the reactions above, how do you think carbonic acid will affect the pH of salt
water?
make it more acidic, more hydrogen ions.