An atom is_____________?
Correct answer: B. smallest particle of an element which can undergo a chemical reaction
- A. smallest indivisible particle in an element
- B. smallest particle of an element which can undergo a chemical reaction
- C. building block of an element
- D. always smaller than molecule
Explanation
An atom is the smallest unit of an element that retains its chemical identity and can participate in chemical reactions. It is not indivisible, because it contains subatomic particles.
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