“Blue star” experiment
How to make a blue star from starch and salts
How can we make a “star” from deep space in the laboratory?
Wear a protective mask, gloves and glasses, and work in a well-ventilated room. Observe safety rules when working with fire. If possible conduct the experiment under a fume hood.
Warning! Only under adults supervision.
Reagents and equipment:
- potassium chlorate (10 g);
- copper(II) sulfate pentahydrate (10 g);
- starch (15 g);
In the beaker, we mix potassium chlorate, starch and copper(II) sulfate pentahydrate. We sprinkle the mixture onto a fireproof surface and ignite it.