Where was the gas before the baking soda was heated?
How is it possible for such a small amount of baking soda to yield such a large amount of gas?
Why did a liquid collect at the top of the test tube but not at the bottom?
Do you think the baking soda was the same substance after it was heated? Provide evidence for your answer
Why should you remove the delivery tube from the water BEFORE turning off the microburner?