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This question is about the development of scientific theories - AQA - GCSE Chemistry - Question 5 - 2020 - Paper 1
Question 5
This question is about the development of scientific theories. Figure 2 shows a timeline of some important steps in the development of the model of the atom. 1890 ... show full transcript
Worked Solution & Example Answer:This question is about the development of scientific theories - AQA - GCSE Chemistry - Question 5 - 2020 - Paper 1
Step 1
Describe the change that Bohr made to the nuclear model.
Answer
Niels Bohr changed the nuclear model by introducing the idea that electrons orbit the nucleus in defined energy levels or shells. This model contrasts with earlier concepts by indicating specific distances at which electrons can exist, leading to the understanding of quantized energy levels.