Question detail
What did the deflection of some alpha particles in the gold foil experiment suggest?
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 isotopes
Question
- A. Atoms are mostly empty space
- B. Positive charge is concentrated in a small nucleus
- C. Electrons are located in fixed orbits
- D. Atoms are indivisible
Answer
The correct answer is B: Positive charge is concentrated in a small nucleus.
Explanation
The correct answer is B: Positive charge is concentrated in a small nucleus. This supports the learning objective "Describe the plum pudding model as a ball of positive charge with negative electrons embedded in it." in The development of the model of the atom because it uses the correct atomic and nuclear radiation relationship for Atoms and isotopes. The other options are less suitable because they do not match the required The development of the model of the atom idea: Atoms are mostly empty space; Electrons are located in fixed orbits; Atoms are indivisible.
Common mistake
Misunderstanding the Plum Pudding Model
Students often describe the plum pudding model as having electrons randomly scattered throughout a solid mass rather than embedded in a positive charge.
Emphasize that the plum pudding model depicts a ball of positive charge with negative electrons embedded within it, rather than just scattered.
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