Learning objective

Determine the relative atomic mass of an element by using the relative masses and proportions of its isotopes.

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Exam focus

Cambridge IGCSE ChemistryAtoms, elements and compoundsSupplement content

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Understand this objective

Quick explanation

This point belongs to Isotopes, especially Isotopes outcomes.
You need to be able to determine the relative atomic mass of an element by using the relative masses and proportions of its isotopes.
The key ideas to know are Calculate and Determine.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

CalculateDetermine

Why it matters

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

Revision tools

Flashcards10 linked cards

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Practice Questions7 linked questions

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Paper 4Theory (Extended)3 marks

Description

Element X has two isotopes: Isotope A with a mass of 10 and abundance of 60%, and Isotope B with a mass of 12 and abundance of 40%.

a
Calculate the relative atomic mass of Element X.
Your answer
Aim for approximately 3 distinct marking points.
[3]

Revision notestopic notes

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