2. Light all three candles.
3. Leave the first candle out in open air.
4. Place the small jar over the second candle
5. Place the large jar over the third candle.
6. Which burns out first? Which burns our second? Which lasts the longest?
Why?
The candle in the small jar burns out first because it has the least oxygen to burn. The candle in the large jar burns out next, because although it had more oxygen to burn than the candle in the small jar, it still runs out of oxygen. The candle in open air continues to burn the longest, because it does not have a limited amount of oxygen to burn.
Note:
Be careful when removing the jars, they could be hot.
