Daily Practice · GCSE Science

Daily Practice - GCSE Science

19th April 1999

5 questions · GCSE · 584 questions in this band

1
Density and the Particle Model of Matter
Why is the density of a gas much lower than that of the same substance as a liquid?
2
Particle Motion, Gas Pressure and Temperature
What causes the pressure of a gas on the walls of its container?
3
Atomic Structure
State the difference between irradiation and contamination.
4
Atomic Structure and the Development of the Model
State the approximate radius of a nucleus compared with the radius of an atom.
5
Radioactivity, Half-Life and Nuclear Uses
Explain why americium-241, an alpha emitter, is suitable for use in a smoke detector.

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