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Ivory Paste Experiment

Last Updated: 02.12.2025

Elephant Toothpaste Experiment

The elephant toothpaste experiment is a popular and visually striking demonstration commonly used in chemistry to introduce chemical reactions. Its name derives from the thick foam produced, which resembles toothpaste squeezing out of a tube. However, it has no actual connection to real toothpaste.

What Happens in the Experiment?

In this experiment, hydrogen peroxide, potassium iodide (or yeast), dish soap, and optionally food coloring are typically used. When these materials are combined, a chemical reaction occurs, rapidly generating a large volume of foam that overflows from the container. The foam appears as if it is spurting out of a toothpaste tube.

Scientific Explanation of the Reaction

Hydrogen peroxide is a compound that can decompose into water and oxygen gas. This decomposition normally occurs slowly. However, when a catalyst such as potassium iodide or yeast is added, the reaction accelerates dramatically. The released oxygen gas interacts with the soap in the solution, producing a large amount of foam.

Materials:

One cup of hydrogen peroxide (3% pharmacy-grade solution can be used)
A few drops of liquid dish soap
One teaspoon of potassium iodide solution or a yeast mixture
Food coloring (optional)
A narrow-necked bottle or test tube
A tray (to catch the overflowing foam)

Safety Warnings

This experiment should only be conducted under adult supervision. Hydrogen peroxide can cause skin irritation upon contact. Goggles and gloves are recommended during the experiment. All materials should be cleaned carefully after the experiment.

Generated by artificial intelligence.

PROCEDURE

Pour a portion of hydrogen peroxide into a graduated cylinder.
Add food coloring to it.
Add dish soap after the food coloring.
Finally, quickly add the potassium iodide and step back immediately.

Generated by artificial intelligence.

References

Kimyacınız. 'Elephant Toothpaste Experiment with Potassium Iodide.' Accessed: 10 May 2025. Don't Forget Us

Okul Dünyası. 'Let’s Do the Elephant Toothpaste Experiment.' Accessed: 10 May 2025. Let’s Do the Ivory Paste (Elephant's Toothpaste) Experiment

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What Did We Talk About?

#experiment #fildişimacunu #Science

The ivory paste experiment is a highly entertaining experiment performed with soap, oxygen, and a bit of chemistry that seems like magic. In this experiment, liquid soap, hydrogen peroxide, and yeast (or a special substance) are mixed together. When a substance called a catalyst is added to the mixture, a large amount of foam suddenly emerges from the soap. The foam overflows from the container and appears like a giant paste! This phenomenon is actually a chemical reaction that releases gas, which turns into foam when combined with soap. A slight warmth can also be felt during the experiment because the reaction is exothermic. This fun and educational experiment demonstrates how surprising science can be.

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