"chemistry in understanding the release of carbon dioxide from acid-base reactions." This is exactly the part I think is less important. My goal is not for my

"chemistry in understanding the release of carbon dioxide from acid-base reactions." This is exactly the part I think is less important. My goal is not for my kid to learn a subset of chemistry theory from the explanation in a book or some fun experiment. Instead my goal is for them to understand why the human race now have this knowledge. How did the first chemist came up with the theory, how did they verify the theory was correct ... why do we now believe this is how atoms work.