Differences between Chemical Reactions and Nuclear Reactions are :
Chemical reactions
1. Only the outermost electrons of the atoms take part in chemical reactions. The nuclei of atoms remain unaffected.
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2. The chemical identity of an element does not change in a chemical reaction. That is, an element remains the same even after the chemical reaction.
3. Usually a small amount of energy is liberated or absorbed in a chemical reaction.
4. A chemical reaction is greatly affected by a change in temperature, pressure, etc.
Nuclear reactions
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1. The nuclei of atoms undergo a change in composition in nuclear reactions,
2. The chemical identity of an element changes in a nuclear reaction. That is, one element changes into another element or elements in a nuclear reaction.
3. A tremendous amount of energy is liberated in a nuclear reaction.
4. A nuclear reaction is not affected by the changes in temperature or pressure.