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Saturday, April 12, 2008
Light is electromagnetic radiation of a wavelength that is visible to the human eye. White light is EM radiation with a waveleng..
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Friday, January 11, 2008
Description: Leadnitrate is heated. A brown gas is collected. When placed in hot water the gas becomes darker (not clearly visib..
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Thursday, August 23, 2007
Aluminium foil is usually considered to be very stable and inert. In this experiment bits of aluminium foil are placed in a dark..
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Thursday, August 23, 2007
Pure magic?
Stephanie is writing with magic ink.
First you can´t read anything, then you can read something, finally everythi..
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Thursday, August 23, 2007
This powder was invented by the Chinese.
It was the first known chemical explosive and is still used today.
What is it's name ..
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Thursday, August 23, 2007
During a stay in England in 1774 Benjamin Franklin conducted an experiment on the effects of oil on the surface of water. He add..
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