Measuring the Effect of Increased Carbon dioxide Concentrations on Temperature
Research question: How does an increase in the concentration of Carbon dioxide affect
air temperature?
Variables:
Control: Amount of light, size of bottle/ volume of air, time
Independent variable: concentration of Carbon dioxide in each bottle, measured in ppm
Dependent variable: air temperature
Materials:
Carbon dioxide probe
Temperature Probe
Vernier equipment
3 two-Liter bottles with the tops cut off
Lamp
Plastic wrap
1 gram of baking soda
15 mL of vinegar
Hypothesis:
Procedure:
1) Label the cut off soda bottles: initial, 0.5 grams of baking soda with 7.5 mL
vinegar, and 0.1 gram baking soda with 1.5 mL of vinegar.
2) Follow the set up in your preliminary laboratory.
3) Use the CO2 probe to measure the amount of CO2 in the initial bottle. Record this
number.
4) Cover the bottle with saran wrap. Turn on the light and run for 15 minutes
5) React 0.5 grams of baking soda with 7.5 mL of vinegar in your second bottle.
After the reaction is complete, measure the amount of CO2 in the bottle. Record.
6) Cover the bottle with saran wrap. Turn on the light and run for 15 minutes
7) React 0.1 grams of baking soda with 1.5 mL of vinegar. After the reaction is
complete, measure the amount of CO2 present and record.
8) Cover the bottle with saran wrap. Turn on the light and run for 15 minutes.