Figure 3 represents different models of the atom - AQA - GCSE Chemistry - Question 4 - 2018 - Paper 1
Question 4
Figure 3 represents different models of the atom.
Which diagram shows the plum pudding model of the atom?
Tick one box.
Which diagram shows the model of the atom ... show full transcript
Worked Solution & Example Answer:Figure 3 represents different models of the atom - AQA - GCSE Chemistry - Question 4 - 2018 - Paper 1
Step 1
Which diagram shows the plum pudding model of the atom?
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Answer
The plum pudding model of the atom is represented by diagram B.
Step 2
Which diagram shows the model of the atom developed from the alpha particle scattering experiment?
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Answer
The model developed from the alpha particle scattering experiment is shown in diagram C.
Step 3
Which diagram shows the model of the atom resulting from Bohr's work?
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Answer
The model resulting from Bohr's work is depicted in diagram A.
Step 4
Define the mass number of an atom.
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Answer
The mass number of an atom is defined as the sum of protons and neutrons in the nucleus.
Step 5
Estimate the relative atomic mass of element X.
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Answer
The relative atomic mass of element X is estimated to be between 69.5 and 70.0.
Step 6
Explain how Chadwick's work led to a better understanding of isotopes.
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Answer
Chadwick provided evidence to show the existence of neutrons, which was necessary because isotopes have the same number of protons but different numbers of neutrons. This understanding clarified that isotopes are atoms of the same element, ensuring accurate representations of atomic mass.
