Pharaoh snakes. Fun chemistry experience at home

ENTERTAINING EXPERIENCES AT HOME
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Pharaoh snakes. Chemical experiments

Entertaining experiments in chemistry

Entertaining experiences at home / Chemistry experiments for children

Place a plate on the brick, on which pour sand soaked in denatured alcohol with a cone. In the upper part of the cone, make a recess with a test tube, into which pour the mixture: 2 g of sodium bicarbonate and 13 g of powdered sugar, previously well ground in a porcelain mortar. Set the alcohol on fire, and after a while a black "snake" will begin to crawl out of the cone, which swells with carbon dioxide formed during the decomposition of sodium bicarbonate, and is pushed out by water vapor and carbon dioxide. The body of the "snake" is fragile - touch it, and the "snake" will crumble. The longer the alcohol burns, the longer the "snake" turns out.

"Pharaoh snakes" can be prepared according to other recipes:

a) 1. Potassium bichromate - 5 g
2. Potassium nitrate - 2,5 g
3. Sugar - 7 g

b) 1. Crushed charcoal - 1,2 g
2. Sugar or powder - 8 g
3. Ammonium nitrate - 4,5 g

Author: Shkurko D.I.

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