The decay of radioactive substances

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  • Created by: Pea_emma
  • Created on: 05-04-13 15:18
The smallest part of an element; the building blocks of matter
Atom
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Nuclei that are radioactive and emit radiation
Unstable nuclei
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The decay of unstable nuclei by the emission of alpha or beta particles gamma radiation
Radioactive
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Radiation that is around us; predominantly from natural sources
Background radiation
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High energy, high frequency electromagnetic radiation
Gamma Radiation
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A helium nucleus; 2 protons and 2 neutrons
Alpha particle
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An electron emitted from the nucleus
Beta particle
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The ability of particles or electromagnetic radiation to ionise other neutral atoms or molecules
Ionising power
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The average time taken for half of the unstable atoms in a radioactive material to decay
Half-life
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Other cards in this set

Card 2

Front

Nuclei that are radioactive and emit radiation

Back

Unstable nuclei

Card 3

Front

The decay of unstable nuclei by the emission of alpha or beta particles gamma radiation

Back

Preview of the front of card 3

Card 4

Front

Radiation that is around us; predominantly from natural sources

Back

Preview of the front of card 4

Card 5

Front

High energy, high frequency electromagnetic radiation

Back

Preview of the front of card 5
View more cards

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