Take an antacid and cut it into smaller pieces. Place a 1/2 cup of vinegar in a small bowl or plastic container. Drop the antacid into the vinegar. Household vinegar is approximately pH 2.5. Stomach acid with a pH of 1.5 is much more acidic. Based on the results of your experiment with the vinegar, what do you think would happen to bacteria that enters the stomach with your food? What action of the digestive system was simulated when you broke the antacid tablet into pieces?