Question 1
Question detail
Which of the following statements is true regarding radioactive decay?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Atoms and nuclear radiation
Question
- A. It is a predictable process
- B. It changes the nucleus of an atom
- C. It does not affect the atomic number
- D. It only emits alpha particles
Answer
The correct answer is B: It changes the nucleus of an atom.
Explanation
The correct answer is B: It changes the nucleus of an atom. This supports the learning objective "Describe alpha radiation as a helium nucleus containing two protons and two neutrons." in Radioactive decay and nuclear radiation because it uses the correct atomic and nuclear radiation relationship for Atoms and nuclear radiation. The other options are less suitable because they do not match the required Radioactive decay and nuclear radiation idea: It is a predictable process; It does not affect the atomic number; It only emits alpha particles.
Common mistake
Misunderstanding Alpha Radiation Composition
Students often describe alpha radiation as just a particle without specifying its composition.
Emphasize that alpha radiation is specifically a helium nucleus, which contains two protons and two neutrons.
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