Exam-style question
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What is a key characteristic of nuclear decay that distinguishes it from chemical change?.
- A.Nuclear decay is always accompanied by radiation emission.
- B.Chemical change always involves heat absorption.
- C.Nuclear decay can be reversed, while chemical change cannot.
- D.Chemical change alters the nucleus of an atom.
Model answer
What a good answer should say
- Nuclear decay is always accompanied by radiation emission.
Explanation
Why this works
A defining characteristic of nuclear decay is that it involves the emission of radiation as unstable nuclei transform into more stable configurations. This is in contrast to chemical changes, which do not necessarily involve radiation and primarily focus on the rearrangement of electrons.
Understanding this distinction is essential for recognizing the implications of nuclear processes in various applications, including medical treatments and energy generation.
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