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How does nuclear energy differ from chemical energy?

Answer 1

Probably differs for its origin.

I would say that Nuclear Energy comes from the disgregation of a Nucleus leading to the formation of lighter nuclei thus representing different resulting elements:
For example, Uranium changes into Kripton and Barium releasing energy.

Chemical energy involves the disgregation of Molecules formed by various arrangements of Carbon, for example, into new molecules still of different arrangements of Carbon. You get energy breaking the bonds between elements and do not operate to change these elements (you start with Carbon, Oxigen, Hidrogen...and end up with them again but arranged differently).
For example:

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Answer 2

Clara Addison

Nuclear energy is released from the nucleus of an atom through processes such as fission or fusion, while chemical energy is released from the rearrangement of atoms in chemical reactions.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.