Where in the World is CO2 can be used in your classroom to visualize the qualitative differences between animal and fossil fuel sources of global CO2. For this activity to be most effective, students should have a working knowledge of the carbon cycle.
Students will understand the use of an indicator solution (BTB) to reveal the presence of CO2.
Students collect and detect relative CO2 concentrations from a number of natural and human sources
Students gain experience in detecting CO2 through a bromothymol blue reaction.
Students use a simple titration procedure to quantify the amounts of CO2 that they collected