Nuclear Reactions

• What types of radiation are there?

  $\alpha$ - Alpha Particles are the same as a Helium Nucleus $_2^4He$

  $\beta$ - Beta Particles are fast moving electrons $_{-1}^0e$

  $\gamma$ - Gamma Rays are waves of energy
• Nuclear Fission

  Nuclear Fission is when a nucleus of a large mass is broken down into multiple nuclei of a smaller mass whilst releasing energy.
• Nuclear Fusion

  Nuclear Fusion is when multiple nuclei of a smaller mass join to form a nucleus of a larger mass whilst releasing energy.
• What is Induced Fission?

  This is when a nucleus breaks up because of external influence, i.e. the introduction of a neutron $_{-1}^0n$
• What is Spontaneous Fission?

  This is when a nucleus breaks apart on its own without the influences of man.
• How is energy gained from nuclear reactions?

  Lost mass is converted into energy.
• $E\ =$$\ \Delta mc^2$


  $E\ =$$\$The energy gained from the nuclear reaction (J)

  $\Delta m\ =$$\$The mass deficit (lost mass) from the reaction (kg)

  $c^2\ =$$\$The speed of light squared ($9x10^{16}\ ms^{-1}$)
• Why is nuclear energy better than fossil fuels?

  Larger quantities of energy can be produced from small amounts of reactants.