Lab Activity: Ziplock Pressure Chamber & Pouring CO2 Gas to Extinguish Candle!
This is a really fun lab activity I designed for my 9th grade physical science class, but it can be easily adapted for other grade levels. There is an open flame in the form of one or more candles depending on how you run the room.
In the first activity, the students follow procedure and measure baking soda and vinegar, then strategically mix them in a baggie without allowing them to mix until all air is removed and the baggie is sealed. Sit back and watch their eyes when they allow them to mix and they learn what pressure is hands on!
In the second activity, they practice measuring the same substances, but this time they create the CO2 gas in a beaker, then pour it down a paper trough to extinguish a candle! It's a fun challenge, but they absolutely lose their minds when they succeed!
The lab includes thought provoking questions about pressure and the density of CO2.
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About the Author
My name is Andy Fry. I’m 32 years old and live in southern Ohio with my wife and 3 kids. I am currently in my 5th year of teaching physical science and geology 9th-12th grades. I hold a bachelor’s degree in integrated science for adolescence through young adult grades 7-12. I scored very high on all parts of the PRAXIS as well as on the infamous resident educator summative assessment (RESA) in my 3rd year of the residency program. I have had a lot of successes early in my career, and in mid-late 2017 realized that I could help more classrooms if I took some of my work into the TpT market. I find it an honor for my work to be utilized to facilitate learning for students I may never meet but still care about. I greatly appreciate your support as I work to gradually expand my store to cover all parts of the physical science curriculum. Thank you for being a teacher! - Mr. Fry