Learning objective

Explain how alpha (α) decay, beta (β) decay, and gamma (γ) emissions affect the nucleus, leading to increased stability and a decrease in excess neutrons. Specifically, during beta (β) emission, a neutron converts into a proton and an electron is released.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

Cambridge IGCSE PhysicsNuclear physicsSupplement content

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Quick explanation

This point belongs to Radioactive decay, especially Radioactive decay outcomes.
You need to be able to explain how alpha (α) decay, beta (β) decay, and gamma (γ) emissions affect the nucleus, leading to increased stability and a decrease in excess neutrons. Specifically, during beta (β) emission, a neutron converts into a proton and an electron is released.
The key ideas to know are Describe and Explain.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeExplain

Why it matters

This objective helps connect Radioactive decay outcomes to exam-style questions, flashcards, and revision notes for Radioactive decay.

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Flashcards10 linked cards

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Practice Questions7 linked questions

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Paper 4Theory (Extended)1 marks

Description

Alpha decay, beta decay, and gamma emissions are three types of nuclear decay that affect the stability of atomic nuclei.

a
State the type of particle emitted during alpha decay.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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