AQA GCSE Chemistry · 8462
Specification 4.3.2.1 · Paper 1
- Revise: The Mole Concept
The number of specified particles in one mole, with the value .
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GCSE Chemistry · key term
The number of specified particles per mole: 6.02 × 10²³ mol⁻¹.
Used by AQA, Edexcel and OCR
Specification 4.3.2.1 · Paper 1
The number of specified particles in one mole, with the value .
Specification 1.50, 1.51 · Paper 1, Paper 2
The number of specified particles in one mole: 6.02 × 10²³ mol⁻¹ at GCSE precision.
The number of specified particles in one mole of a substance: .
Specification CM3.1ii, C3.1g, CM5.1i · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The number of specified particles per mole: 6.02 × 10²³ mol⁻¹ at GCSE.
Revise: Standard Form with AvogadroThe Avogadro constant is written in standard form because writing out all its digits would be awkward.
The number of specified entities in one mole: exactly , commonly rounded to for calculations.
The fixed number of specified particles per mole, .
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The number of specified particles in one mole: approximately 6.0 × 10²³ mol⁻¹ for this course.
Revise: Avogadro constant and the moleOne mole of water molecules contains the Avogadro constant number of molecules, but each water molecule contains three atoms, so the total number of atoms is different.
The fixed number of specified particles in one mole: for these calculations.
Do not multiply by the Avogadro constant when finding the mass of one particle. One mole contains many particles, so divide the mass of one mole by .
Keep the Avogadro constant in brackets when entering a division into a calculator: for example, .
For this OCR specification, use the Avogadro constant as 6.0 × 10²³ in standard form unless a question supplies a different value.
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