It's Our Air - 1-6 Making and Using Ozone Indicators It's Our Air - Home About Curriculum Quick Index Teacher Tips FAQ Contact ESSENTIAL QUESTIONS: How can we find out if there is ozone in the air around our school? Where on campus can we find the most ozone? TIME NEEDED: 90 minutes MATERIALS: WORKSHEETS (included) MAKING THE STRIPS Potassium iodide White filter paper Cornstarch Glass or plastic stirring rod Measuring spoons Masking tape String Hole punch Small paint brush Beaker, 250 ml Distilled water Aprons Hot plate Hot pad Safety goggles (optional) Low-temperature drying oven (optional) Heat-safe glass plate (optional) Microwave oven (optional) EXPOSING THE STRIPS Distilled water in a spray bottle Thread Psychrometer (optional) INTERPRETING THE STRIPS Distilled water Schoenbein color scale (included) Relative humidity Schoenbein Number Chart (included) TOPICS: ground-level ozone TYPES: data collection, data analysis NC ESSENTIAL STANDARDS for Earth/Environmental Science: EEn.2.5.1. Summarize the structure and composition of our atmosphere EEn.2.5.5 Explain how human activities affect air quality MAKING AND USING OZONE INDICATORS ACTIVITY In the hands-on activity, students check for the presence and relative amounts of ozone in the air using Schoenbein strips they make with filter paper, cornstarch, and potassium iodide. MAKING AND USING OZONE INDICATORS - TEACHER TO TEACHER TIPS The quick video below has tips for doing this activity from Mark Townley, an award-winning, North Carolina high school teacher. Mark helped develop It’s Our Air and has used each of these activities with his students. BACK TO CURRICULUM PAGE OTHER MODULE 1 (AIR POLLUTANTS & THEIR SOURCES) ACTIVITIES AND VIDEOS 1-1 What Is Air? 1-2 Combustion and Combustion Equations 1-3 Parts Per Million 1-4 The Criteria Pollutants and a Closer Look at Ozone 1-5 NC & Local Sources of Air Pollution 1-6 Making and Using Ozone Indicators (this activity) 1-7 Sampling Particulate Matter Follow It's Our Air on Facebook N.C. Division of Air Quality N.C. Air Awareness Program CONTACT THE NC AIR AWARENESS PROGRAM • Mailing Address: 1641 Mail Service Center, Raleigh, NC 27699-1641 • Physical Address: 217 West Jones Street, Raleigh, NC 27603 • Phone: 919-707-8400 • FAX: 919-707-0718 • Email Us: email@example.com MISSION • The North Carolina Air Awareness Program is a public outreach and education program of the North Carolina Division of Air Quality. The primary goal of the program is to reduce air pollution through voluntary actions by individuals and organizations.