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Dissolving tablets more quicklyFeatured science projectScience project video


The hypothesis that Alka-Seltzer antacid tablets will dissolve most quickly in hydrochloric acid solution and at the highest temperature, is proven to be true.

Antacids are used for quick relief from heartburn and stomach discomfort especially after a heavy meal. In order to see quick results, the tablets are best taken with warm water so that they dissolve most quickly. Most mediations are in fact taken best with warm water rather than cold water.

Also consider

Try to repeat the science fair project by using other tablets like vitamin C.

The science fair project can also be repeated using an acidic solution to observe how long it takes the acidity to be neutralized by the antacid tablet.


Alka-Seltzer -

Why does Alka-Seltzer fizz? -

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Complexity level:
Project cost ($):
Time required:
1 hour to prepare, 2 hours for the science project experiment
Material availability:
May be purchased at a chemist
Safety concerns:

Basic safety requirements