Steve Spangler Science: Gaviscon Worms – The Science of Antacids

Demonstrate the science behind Gaviscon as it works to create a polymer barrier between the oesophagus and excess acid in the stomach.

Acid reflux disease is battled by a change in diet, or by using antacids, such as Gaviscon. In this demonstration, a 250 mL flask is used to model the stomach and to show how the sodium alginate in the product Gaviscon reacts with the acid in the stomach to form a barrier or “raft” which forms a barrier between the oesophagus and excess acid in the stomach. This raft helps keep all the components of the stomach contents in the stomach where they work, not letting them seep back up into the oesophagus where they hurt.


Science Topics
Chemistry, Food Science, Polymers
K-6
Kindergarten, 1st Grade, 2nd Grade, 3rd Grade, 4th Grade, 5th Grade, 6th Grade

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