When an alpha particle is emitted from a nucleus the nucleus loses two protons and two neutrons. This means the atomic mass number decreases by 4 and the atomic number decreases by 2. A new element is formed that is two places lower ( Periodic Table)
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Beta decay.
When a beta particle is emitted from the nucleus the nucleus has one more proton and one less neutron. This means the atomic mass number remains unchanged and the atomic number increases by 1.
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Nuclear fission.
Nuclear power reactors use a reaction called nuclear fission. The fission is a source of energy for the generation of power. Two isotopes in common use as nuclear fuels are uranium-235 and plutonium-239
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Power stations -
1. Fuel produces heat and heat is used to boil water and is turned into steam 2. Steam turns a turbine 3. Turbine turns a generator and the generator makes electricity 4. Electricity goes to the transformers to produce the correct voltage
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Nuclear fusion
Nuclear fusion involves two atomic nuclei joining to make a large nucleus. Energy is released when this happens. Nuclear fusion can also be used as a source of energy.
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Potential difference.
A typical cell produces a potential difference of 1.5V. When two or more cells are connected in series in a circuit, the total potential difference is the sum of their potential differences.
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Heat lost through :
Through the roof , Through windows, Through gaps around the door, Through the walls, Through the floor
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