Footage shows a teacher demonstrating the 'Elephant toothpaste' experiment to his students.

The instructor used a hydrogen peroxide solution and poured the substance into a small beaker containing potassium iodide, red pigment, and detergent in his classroom in Yunnan, China.

He can be seen adding the oxidising agent into the test tube, causing an immediate reaction when the mixtures combined.

A yellow foam spewed out of the glass and expanded at an enormous speed, occupying the whole bottle and half of the table.

The lecturer then burned a stick and moved it through the foam, showing how it is inflammable.

The mixture caused a catalytic reaction that sped up the breakdown of hydrogen peroxide, releasing a lot of oxygen gas. The dish soap trapped the gas as bubbles, making the big foamy eruption.