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5.1.1a Structure of the atom and ions

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Question 1
a.

A radioactive source emits α\alphaα-, β\betaβ- and γ\gammaγ-radiation.

Which of these radiations:

has the greatest ionising power?

[1]
b.

consists of high-energy electromagnetic waves?

[1]
c.

is deflected towards the positive terminal in an electric field?

[1]
d.

In a historic physics experiment, a beam of alpha particles was directed at a very thin gold foil inside a vacuum chamber.

Explain why it was essential for this experiment to be conducted in a vacuum rather than in air.

[2]
e.

State two conclusions that were drawn from this experiment about the structure of the atomic nucleus.

[2]
Markscheme

5.1.1a Structure of the atom and ions Questions

  1. IGCSE
  2. /Physics
  3. /5.1.1a Structure of the atom and ions

114 exam-style questions on CIE IGCSE Physics 5.1.1a Structure of the atom and ions. Each one has a worked solution and a mark scheme showing where the marks go.

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