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Learning objective

Recognize that the mole (mol) is the unit for measuring the amount of substance, and that one mole contains approximately 6.02 x 10²³ particles, known as the Avogadro constant, which can refer to atoms, ions, or molecules.

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

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE ChemistrySubject contentSupplement content

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Quick explanation

Recognize that the mole (mol) is the unit for measuring the amount of substance, and that one mole contains approximately 6.02 x 10²³ particles, known as the Avogadro constant, which can refer to atoms, ions, or molecules

  • This point belongs to The mole and the Avogadro constant, especially The mole and the Avogadro constant outcomes.
  • You need to be able to recognize that the mole (mol) is the unit for measuring the amount of substance, and that one mole contains approximately 6.02 x 10²³ particles, known as the Avogadro constant, which can refer to atoms, ions, or molecules.
  • The key ideas to know are State.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

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Paper 4 structured question: The mole and the Avogadro constant

Paper 4Theory (Extended)1 marks

Description

The Mole and Avogadro's Constant

The mole is a fundamental unit in chemistry that measures the amount of substance. One mole contains approximately 6.02 x 10²³ particles, known as Avogadro's constant.

  1. a

    State the value of Avogadro's constant.

    Aim for approximately 1 distinct marking point.

    [1]
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