Why do people take antacids when they suffer from indigestion? Explain the scientific principle behind this remedy.
When someone suffers from indigestion, their stomach produces an excessive amount of hydrochloric acid, which leads to pain and irritation. Antacids are medicines specifically designed to relieve this discomfort. They contain mild bases, such as magnesium hydroxide or aluminium hydroxide. When an antacid is consumed, the base in it reacts with the excess acid in the stomach. This process is a neutralization reaction, where the acid and base react with each other to form harmless salt and water, thereby reducing the acidity in the stomach and providing relief from indigestion.
Explanation
Grading Rubric: 1. Identifies the cause of indigestion (excess acid in the stomach). 2. Explains what antacids are (contain bases). 3. Clearly connects the function of antacids to the principle of neutralization. 4. Mentions the outcome of neutralization (reduction of acidity, relief from discomfort).