Question detail
What was the plum pudding model of the atom proposed by J.J. Thomson?
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. A ball of positive charge with negative electrons embedded
- B. A solid sphere with no internal structure
- C. A nucleus surrounded by a cloud of electrons
- D. A model with protons and neutrons in the nucleus
Answer
The correct answer is A: A ball of positive charge with negative electrons embedded.
Explanation
The correct answer is A: A ball of positive charge with negative electrons embedded. This supports the learning objective "Explain why most alpha particles passing straight through gold foil suggested that atoms are mostly empty space." 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: A solid sphere with no internal structure; A nucleus surrounded by a cloud of electrons; A model with protons and neutrons in the nucleus.
Common mistake
Misunderstanding Atomic Structure
Students often think that atoms are solid and have no empty space.
Emphasize that most of an atom's volume is empty space, as demonstrated by the alpha particle scattering experiment.
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