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Science - Earth Science
Standard 3 Objective 3
3 class periods of 30 minutes each
Students will identify the sources of carbon in the carbon cycle.
A Brief Description: Students will use the chemical indicator bromothymol blue to detect the presence of carbon in different sources.
Time Needed: Materials preparation: 30 minutes. Class time: 40 minutes (with one observation 24 hours later). Discussion & review: 30 minutes
Safety/Security Issues: Carbon monoxide is an odorless, moderately toxic, poisonous, and flammable gas. In a well-ventilated room, students could do this activity. In that case, teachers should provide students with balloons full of car exhaust. It is not recommended that students participate in filling the balloons with car exhaust. An adult assistant (or two) is necessary, however.
Preparations for Experiment 5, Teacher Demonstration
Automobile exhaust collection
Experiment 5, Teacher Demonstration Procedures:
Lesson Design by Jordan School District Teachers and Staff.