Question detail
What was a significant outcome of Chadwick's work in atomic theory?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes
Question
- A. Identification of the neutron
- B. Discovery of the electron
- C. Development of the plum pudding model
- D. Establishment of the nuclear model
Answer
The correct option is Identification of the neutron.
Explanation
The correct option is Identification of the neutron. Identification of the neutron is correct because it directly supports the approved learning objective to describe how later evidence led to the proton model of positive nuclear charge. This is tested in the subtopic The development of the model of the atom within A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, so the reasoning must stay within AQA GCSE Chemistry 8462 Unit 4.1. The other options are weaker because they either confuse a nearby Chemistry concept, use the wrong subtopic context, or do not answer The development of the model of the atom precisely. Repair marker 31e4caeb keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Confusing Proton Charge
Students often state that protons have a negative charge instead of a positive charge.
Remember that protons have a relative electrical charge of +1. Keep the correction anchored to The development of the model of the atom and avoid mixing it with nearby Unit 4.1 ideas.
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