Starting with 60 grams of Sugar and about 60 ml of concentrated sulfuric acid
(DO NOT LET YOUR CHILDREN DO THIS!!!)
(IF YOU, as an adult do it, do it outside!)
The Sulfuric acid "cooks" the sugar turning it into pure carbon and water (in
the form of steam). It gets VERY hot (use a pyrex beaker -anything else
with break - usually shattering.)
Neutralize the acid afterwards with lots of baking soda as the acid remains
unchanged.
It is a "Wow" demonstration.
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