Atomic Structure - 4.3.2 Different Half-Lives of Radioactive Isotopes (GCSE Physics AQA)

Different Half-Lives of Radioactive Isotopes

Half-life Range

  • Half-lives can vary between isotopes. Some radioactive isotopes have very long half-lives, whilst others have very short half-lives. However, all the radioactivity of all isotopes will decrease as time goes on.

Associated Hazards

  • Half-life can determine risk. Half-life is crucial when determining the danger of an isotope. If a radioactive substance has a very long half-life, we know that it will remain radioactive for a very long time. The longer a substance remains radioactive, the more dangerous it is.

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AQA 1 Energy

Energy – 1.3 National and Global Energy Resources (GCSE Physics AQA)

Energy – 1.2.2 Efficiency (GCSE Physics AQA)

Energy – 1.2.1 Energy Transfers in a System (GCSE Physics AQA)

Energy – 1.1.4 Power (GCSE Physics AQA)

Energy – 1.1.3 Changes in Energy (GCSE Physics AQA)

Energy – 1.1.2 Changes in Energy (GCSE Physics AQA)

Energy – 1.1.1 Energy Stores and Systems (GCSE Physics AQA)

AQA 2 Electricity

Electricity – 2.5.2 Electric Fields (GCSE Physics AQA)

Electricity – 2.5.1 Static Charge (GCSE Physics AQA)

Electricity – 2.4.3 The National Grid (GCSE Physics AQA)

Electricity – 2.4.2 Energy Transfers in Everyday Appliances (GCSE Physics AQA)

Electricity – 2.4.1 Power (GCSE Physics AQA)

Electricity – 2.3.2 Mains Electricity (GCSE Physics AQA)

Electricity – 2.3.1 Direct and Alternating Potential Difference (GCSE Physics AQA)

Electricity – 2.2.2 Series and Parallel Circuits (GCSE Physics AQA)

Electricity – 2.1.4 Resistors (GCSE Physics AQA)

Electricity – 2.2.3 Current, Resistance and Potential Difference (GCSE Physics AQA)

AQA 3 Particle model of matter

Practice Model of Water – 3.3.3 Increasing the Pressure of a Gas (Physics Only) HT only (GCSE Physics AQA)

Practice Model of Water – 3.3.2 Pressure in Gases (Physics Only) (GCSE Physics AQA)

Practice Model of Water – 3.3.1 Particle Motion in Gases (GCSE Physics AQA)

Practice Model of Water – 3.2.3 Changes of Heat and Specific Latent Heat (GCSE Physics AQA)

Practice Model of Water – 3.2.2 Temperature Changes in a System and Specific Heat Capacity (GCSE Physics AQA)

Practice Model of Water – 3.2.1 Internal Energy (GCSE Physics AQA)

Practice Model of Water – 3.1.1 Density of Materials (GCSE Physics AQA)

Practice Model of Water – 3.1.2 Changes of State (GCSE Physics AQA)

AQA 4 Atomic structure

Atomic Structure – 4.4.2 Nuclear Fusion (GCSE Physics AQA)

Atomic Structure – 4.4.1 Nuclear Fission (GCSE Physics AQA)

Atomic Structure – 4.3.2 Different Half-Lives of Radioactive Isotopes (GCSE Physics AQA)

Atomic Structure – 4.3.3 Uses of Nuclear Radiation (GCSE Physics AQA)

Atomic Structure – 4.3.1 Background Radiation (GCSE Physics AQA)

Atomic Structure – 4.2.4 Radioactive Contamination (GCSE Physics AQA)

Atomic Structure – 4.2.3 Half-Lives and the Random Nature of Radioactive Decay (GCSE Physics AQA)

Atomic Structure – 4.2.2 Nuclear Equations (GCSE Physics AQA)

Atomic Structure – 4.2.1 Radioactive Decay and Nuclear Radiation (GCSE Physics AQA)

Atomic Structure – 4.1.3 The Development of the Model of the Atom (common content with Chemistry) (GCSE Physics AQA)

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Forces – 5.7.2 Conservation of Momentum (GCSE Physics AQA)

Forces – 5.6.3.3 Factors Affecting Braking Distance 1 (GCSE Physics AQA)

Forces – 5.7.1 Momentum is a Property of Moving Objects (GCSE Physics AQA)

Forces – 5.6.3.4 Factors Affecting Braking Distance 2 (GCSE Physics AQA)

Forces – 5.6.3.2 Reaction Time (GCSE Physics AQA)

Forces – 5.6.3.1 Stopping Distance (GCSE Physics AQA)

Forces – 5.6.2.3 Newton’s Third Law (GCSE Physics AQA)

Forces – 5.6.2.2 Newton’s Second Law (GCSE Physics AQA)

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AQA 6 Waves

Waves – 6.3.2 Perfect Black Bodies and Radiation (GCSE Physics AQA)

Waves – 6.3.1 Emission and Absorption of Infrared Radiation (GCSE Physics AQA)

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Waves – 6.2.5 Lenses (Physics Only) (GCSE Physics AQA)

Waves – 6.2.4 Uses and Applications of Electromagnetic Wave 2 (GCSE Physics AQA)

Waves – 6.2.3 Properties of Electromagnetic Waves 2 (GCSE Physics AQA)

Waves – 6.2.2 Properties of Electromagnetic Waves 1 (GCSE Physics AQA)

Waves – 6.2.1 Types of Electromagnetic Waves (GCSE Physics AQA)

Waves – 6.1.5 Waves For Detection and Exploration (Physics Only) (HT Only) (GCSE Physics AQA)

Waves – 6.1.4 Sound Waves (Physics Only) (HT Only) (GCSE Physics AQA)

AQA 7 Magnetism and electromagnetism

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Magnetism & Electromagnetism – 7.3.2 Uses of the Generator Effect (HT Only) (GCSE Physics AQA)

Magnetism & Electromagnetism – 7.3.1 Induced Potential (HT Only) (GCSE Physics AQA)

Magnetism & Electromagnetism – 7.2.4 Loudspeakers (Physics Only) (HT Only) (GCSE Physics AQA)

Magnetism & Electromagnetism – 7.2.3 Electric Motors (HT Only) (GCSE Physics AQA)

Magnetism & Electromagnetism – 7.2.2 Fleming’s Left Hand Rule (HT only) (GCSE Physics AQA)

Magnetism & Electromagnetism – 7.2.1 Electromagnetism (GCSE Physics AQA)

Magnetism & Electromagnetism – 7.1.2 Magnetic Fields (GCSE Physics AQA)

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AQA 8 Space physics

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The Solar System – 8.1.3 Orbital Motion, Natural and Artificial Satellites (GCSE Physics AQA)

The Solar System – 8.1.2 The Life Cycle of A Star (GCSE Physics AQA)

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