2013年12月12日星期四

Sucrose fireworks


Experimental principle:
Cane sugar contains three elements: carbon, hydrogen and oxygen, it is flammable. When sulfuric acid drops down with potassium chlorate, which can generate the odd smelly chlorine dioxide gas: 3KClO3+2H2SO4=2KHSO4+KClO4+H2O+2ClO2↑Because the gas has strong oxidizability and can make the sugar burn violently. While adding magnesium powder, it will produce white fireworks. While adding barium nitrate, it will produce green fireworks.

2013年12月9日星期一

A large wave of gifes are approaching


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Magic fuse


Experimental principle:
(1) Clip napkins (15~20 mm width), slowly rub into line. 
(2) Add 20 g potassium nitrate, 8 g glucose, 2 g sulfur with 10 ml water, 5 ml ethanol into breaker.(3) Heat the beaker, after boiling put the rubbing paper line into it. Remove and straighten, cool to the room temperature.(4) Wrap fuse with dry paper or cloth, squeeze, blot moisture and fully dry. (5) Light, rapidly burn and produce a large amount of gas in a short period of time.More interesting videos:
http://www.lookchem.com/zhuanti/laboratory/index.aspx?lang=1