NUCLEAR CHEMISTRY Fission & Fusion.  splitting a nucleus into two or more smaller nuclei  1 g of 235 U = 3 tons of coal.

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Presentation transcript:

NUCLEAR CHEMISTRY Fission & Fusion

 splitting a nucleus into two or more smaller nuclei  1 g of 235 U = 3 tons of coal

 chain reaction - self-propagating reaction  critical mass - mass required to sustain a chain reaction

 combining of two nuclei to form one nucleus of larger mass  thermonuclear reaction – requires temp of 40,000,000 K to sustain  1 g of fusion fuel = 20 tons of coal  occurs naturally in stars C. Johannesson

 235 U is limited  danger of meltdown  toxic waste  thermal pollution  fuel is abundant  no danger of meltdown  no toxic waste  not yet sustainable C. Johannesson FISSIONFISSION FUSIONFUSION

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