Huge foam volcano covers garden in world’s biggest ‘elephant toothpaste’ stunt

This incredible footage sees a "foam volcano" of acid, soap and food dye take over a garden.

The dramatic experiment was carried out by YouTubers Nick Uhas and David Dobrik – who were re-creating a similar attempt by NASA engineer Mark Rober.

Known as the 'elephant's toothpaste' test – the mixture combines and reacts before exploding dramatically – with the foam-like substance growing to an incredible size.

In the YouTube footage, Uhas explained the science behind the experiment that resulted in 200 cubic meters of foam spilling over in the backyard of his home in California.

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The experiment involves mixing hydrogen peroxide, soap and food coloring dye, before 'catalyzing a rapid decomposition of the hydrogen peroxide with the potassium iodide,'

The substance later transforms into oxygen gas which grows larger and gets stuck in the soapy water. Bubbles are then created, which continue to grow.

Uhas said: "We start with 35 per cent hydrogen  peroxide and we add soap and food coloring dye, we then add a catalyst potassium iodine in our case.

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"When these two chemicals mix together it strips one of the oxygen's of the hydrogen peroxide which creates  oxygen gas.

"This gas then gets caught in the soap mixture and creates a tonne of foam very fast if you use the right catalyst."

How rapidly the reaction proceeds will depend on the concentration of hydrogen peroxide.

The reaction is exothermic, meaning the foam produced in hot.

Sometimes the reaction is known as the marshmallow experiment.

The mixture is also eco-friendly which means it would not have damaged any surfaces or foliage that it spilled out on to.  

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