In the beaker in the picture there is some amount of liquid water that has been brought to a boil by the heat from the bunsen burner below it. John says that the bubbles are full of air. Jennifer says they’re full of oxygen. Michael says they are full of hydrogen and oxygen. Finally, Simone says they are all wrong. Who is right? If Simone is right, and the others are wrong, what is the gas inside the bubbles in boiling water?
Discuss this with the members of your group. Consider your answers carefully and try to come to an agreement within your group. Once you have done so write down what you think the answer is and explain why in two or three complete sentences. Do this silently and without further discussion. Once you are done compare your written answers with your group members and decide whose answer is best and most clearly states your position. Nominate someone to read your final, revised answer to the class.