AQA GCSE Chemistry · 8462
Specification 4.3.2.1, 4.3.2.3, 4.3.2.4 · Paper 1
The SI unit used to measure amount of substance; one mole contains specified particles.
Revise: The Mole ConceptThe symbol for the unit mole is mol.
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GCSE Chemistry · key term
The amount of substance containing a specified number of particles; its unit is the mole, .
Used by AQA, Edexcel and OCR
Specification 4.3.2.1, 4.3.2.3, 4.3.2.4 · Paper 1
The SI unit used to measure amount of substance; one mole contains specified particles.
Revise: The Mole ConceptThe symbol for the unit mole is mol.
Keep mass in grams. If a question gives kilograms or milligrams, convert the mass before using the mole equation.
State the correct particles when describing a mole: for example, atoms, molecules, ions or formula units. Ionic substances such as sodium chloride do not consist of molecules.
Keep the substances in the same order throughout your working so that each mole value becomes the correct coefficient.
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The amount of substance containing a fixed number of specified particles; its unit symbol is mol.
The amount of substance measured in mol; balanced-equation coefficients give ratios between amounts in moles.
The amount of substance containing the same fixed number of particles as one mole of any other substance; its unit is mol.
Specification 1.46, 1.50, 1.51, 1.53, 5.16C, 5.17C · Paper 1, Paper 2
The amount of substance calculated by dividing a mass in grams by the relative atomic or formula mass.
Revise: Empirical Formula ExperimentThe experiment measures how much magnesium reacted and how much oxygen joined it. Those masses are converted to amounts in moles, because formulae represent ratios of atoms rather than ratios of masses.
The amount of a substance containing 6.02 × 10²³ specified particles.
The counting unit for amount of substance. One mole contains 6.02 × 10²³ specified particles.
The amount of substance containing a fixed number of particles; its unit is mol.
The amount of substance containing the same number of specified particles as there are in one mole of any other substance; its unit is mol.
The amount of substance used to compare numbers of particles; equal numbers of moles contain equal numbers of particles.
Specification CM3.1ii, CM3.1iv, C3.1g, CM5.1i, CM5.1iii, C5.1c, C5.1e, C5.1g · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The amount of substance containing 6.02 × 10²³ specified particles.
Revise: Standard Form with AvogadroAtoms and molecules are too small to count individually in a sample, so chemists count them in moles.
The quantity used to measure amount of substance; one mole contains a fixed number of specified particles.
The SI unit of amount of substance. One mole contains exactly specified elementary entities.
The SI unit of amount of substance; one mole contains specified particles.
The SI unit of amount of substance, with symbol mol.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The unit of amount of substance, symbol mol. One mole contains the Avogadro constant number of specified particles.
Revise: Avogadro constant and the moleChemists therefore use the mole as a counting unit, much as a dozen means 12 items. An amount of substance of one mole, written 1 mol, contains the same number of specified particles whatever the substance is.
The amount of substance containing one Avogadro constant of specified particles, such as atoms, molecules or formula units.
The amount of substance containing the Avogadro number of specified particles; its unit is mol.
The unit of amount of substance; one mole contains specified particles.
An amount of substance containing particles; one mole has a mass in grams numerically equal to the substance's relative formula mass.
The unit for amount of substance. One mole contains approximately particles.
The amount of substance containing a fixed number of particles; it is measured in mol.
The amount of substance containing 6.02 × 10^23 specified particles, such as atoms, molecules, formula units or ions.
The SI unit for amount of substance; amounts in moles can be compared using the coefficients in a balanced chemical equation.
The amount of substance containing a fixed number of particles; chemical equation coefficients give ratios of amounts in moles.
The amount of substance containing a fixed number of particles; its unit is the mole (mol).
The amount of substance containing Avogadro's number of particles.
An amount of substance containing the Avogadro number of particles.