Metal explosions 'driven by charge'

Composition and transformation of substance.

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Metal explosions 'driven by charge'

#1  Postby DougC » Jan 26, 2015 7:19 pm
B.B.C. Article
Using super-fast video footage and computer simulations, scientists have revised our understanding of explosions well known from high-school chemistry.
Chemists in the Czech Republic and Germany captured images of the alkali metals sodium and potassium exploding on contact with water.
They saw a flash of bluish purple and "spikes" of metal shooting outwards.
This suggests that the reaction is kick-started by positive charges repelling each other.
Writing in the journal Nature Chemistry, the researchers say their results explain how an explosion can be sparked, if the conditions are just right, despite there being very little contact area between the water and the metal.

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