This week in science lab, 8th grade students explored the role of *oxygen in the combustion process*. In the experiment, a lit candle was placed in water and covered with a glass cup. The students observed as the candle went out and the water level rose inside the cup. Through this hands-on activity, students discovered that the candle went out because the oxygen inside the cup was used up during combustion. As the oxygen was consumed, the pressure inside the cup dropped, causing the water to ri