A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

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Question 46
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This question is about historical models of the atom.

Two historical models of the atom, labeled Model A and Model B.

a.

Identify the names of the two historical atomic models shown as Model A and Model B in the diagram above.

[2]
b.

Compare Model B with Model A. In your comparison, refer to the atomic structure, the distribution of electrical charge, and the location of mass in both models.

[4]
c.

In 1932, the English physicist James Chadwick conducted experiments that led to the discovery of a previously unobserved subatomic particle.

Name the subatomic particle discovered by Chadwick.

[1]
d.

Explain how discovering this particle resolved the mystery of isotopes, specifically focusing on how atoms of the same element can have different physical masses.

[2]

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Questions

  1. GCSE
  2. /Chemistry
  3. /A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes