Question 9
Some people suffer from heartburn. In fact, although the pain is near the heart, it has nothing to do with the heart. It is caused by stomach acid bubbling into the oesophagus (the gullet), which creates a burning sensation. We usually treat it by eating or drinking an antacid (Figure 8.6). Work in small groups. Try this activity to see how an antacid works. Antacid tablets typically contain a lot of calcium carbonate, along with other substances such as binders that hold the tablet together, and flavourings. Vinegar is a common household acid.
Predict what will happen if you drop an antacid tablet into a mixture of vinegar and water.
Predict what will happen if you drop an antacid tablet into a mixture of vinegar and water.
