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5.1 The nuclear model of the atom

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Question 18
a.

Atoms are composed of protons, neutrons, and electrons.

(i) Which of these particles is found orbiting the outer regions of the atom?

(ii) Which of these particles has a positive electric charge?

[2]
b.

Carbon has multiple isotopes, including 612C{}^{12}_{6}\text{C}612​C and 614C{}^{14}_{6}\text{C}614​C.

(i) What does the number 6 tell us about the nuclei of carbon atoms?

(ii) Which subatomic particle does an atom of 614C{}^{14}_{6}\text{C}614​C contain more of than an atom of 612C{}^{12}_{6}\text{C}612​C?

(iii) State the number of electrons in a neutral atom of:

  1. 612C{}^{12}_{6}\text{C}612​C
  2. 614C{}^{14}_{6}\text{C}614​C
[4]
Markscheme

5.1 The nuclear model of the atom Questions

  1. IGCSE
  2. /Physics
  3. /5.1 The nuclear model of the atom

284 exam-style questions on CIE IGCSE Physics 5.1 The nuclear model of the atom, covering 5.1.1a Structure of the atom and ions, 5.1.1b Alpha-particle scattering, 5.1.2a Composition of the nucleus and isotopes, 5.1.2b Proton number, nucleon number and nuclide notation, and 5.1.2c Nuclear fission and nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.

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