About This Lesson
In our premier episode, “Snuff It!,” we answer the question: “How can you show that carbon dioxide is more dense than air?” To do it, we snuff out the flames of candles invisibly — with the help of some “dry ice.” You can’t see our carbon dioxide gas, but you can prove that it’s there when you watch the flames go out. Tags: Little Shop of Physics, Colorado State University, Brian Jones, Physics, K-12