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Nuclear reactions are all about the nucleus. Nucleons are governed by the strong force. The strong force is much bigger than the electromagnetic force and the nucleons are much closer to each other than electrons are.
In a sense, yes, because the amounts of energy that can be released from a given mass of reacting chemicals is much, much smaller than that which can be released from a similar mass undergoing conversion from mass to energy.
The simplest answer, though not the entire one, is that the energy is released during reactions depends on the strength of the bonds being broken to produce that energy.
The bonds being broken during a nuclear fission reaction are so much stronger than those being broken during a chemical reaction.
Chemical reactions involve the release of energy at the orbital level. Nuclear reactions release the energy involved with holding the nucleus together which are extremely high.
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Chemical reactions that release energy often occur spontaneously. Chemical reactions that absorb energy will not occur without energy.
Nuclear reactions release large amounts of energy.
Endothermic chemical reactions absorb more energy than they release, while exothermic chemical reactions release more energy than they absorb.
I don't know of any way to do this. Nuclear energy simply provides heat, so could conceivably be used to drive chemical reactions, but I don't think this has ever been done.
Reactions involve absorption and release of thermal energy. Heat is either absorbed or released.
only nuclear reactionsChemical reactions that release free energy are called exergonic reactions. Fire and cellular respiration are examples of exergonic reactions.
Nuclear energy is not produced by chemical reactions
These are not chemical reactions but thermonuclear reactions.
Chemical energy arises through reactions between atoms of different materials, whilst nuclear energy arises through reactions in the nucleus of the atoms. In chemical reactions the nuclei are not affected or changed.
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Chemical reactions that release energy often occur spontaneously. Chemical reactions that absorb energy will not occur without energy.
Nuclear reactions release large amounts of energy.
Endothermic chemical reactions absorb more energy than they release, while exothermic chemical reactions release more energy than they absorb.
Energy, in the release of binding energy
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They are not similar, as fusion and fission involve changes to the nucleus whereas chemical energy involves the bonds between atoms
These are called exothermic reactions.