Question detail
What evidence led scientists to propose the existence of protons in the nucleus?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes
Question
What evidence led scientists to propose the existence of protons in the nucleus?
Answer
Later experiments showed that the nucleus contained positively charged particles, which were identified as protons. This was based on observations of atomic behavior and the need to account for the positive charge in the nucleus.
Explanation
This answer is strong because it directly addresses the evidence that led to the identification of protons, demonstrating an understanding of the development of atomic models. The question tests the student's ability to recall and describe key historical scientific evidence.
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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