"Gummy bear volcano" experiment
How to make a volcano from a gummy bear and potassium chlorate
For chemists, gummy bears are not just a sweet, there’s a chemical reagent too.
Observe safety rules when working with fire and heated objects. Wear protective gloves, glasses and a mask.
Warning! Don’t try to repeat this experiment without a professional supervision!
Reagents and equipment:
- test tube;
- potassium chlorate (15 g);
- gummy bear;
- gas burner.
Fix the test tube on the stand, put a funnel in the test tube and add potassium chlorate through it. Then melt the chlorate with the gas burner. Add a gummy bear to the liquid. It actively reacts with the potassium chlorate.
Potassium chlorate is a strong oxidizer. If it is melted, its strength increases from the release of oxygen in thermal decomposition.
If you place a gummy bear in the test tube, it will react with the melted salt, and the sugar and gelatin contained in the bear will firstly carbonize, and then burn.
The flame will have a pinkish-purple color, because of the presence of potassium ions in the chlorate. At a high temperature, the potassium ion receives a large quantity of energy and moves to an unstable state. When it moves back to a stable state, it emits a glow in the form of a pinkish-purple color.