Use of amount of substance in relation to masses of pure substances key terms

Mole

A unit of measurement for the amount of substance, representing 6.02 x 10^23 particles. In Moles (HT only), this term helps explain (HT only) State that chemical amounts are measured in moles for AQA GCSE Chemistry 8462 Unit 4.3.

Relative Formula Mass

The mass of a formula unit of a compound, calculated as the sum of the relative atomic masses of its constituent atoms.

Mole

The unit of measurement for the amount of substance, symbolized as 'mol'. In Moles (HT only), this term helps explain (HT only) State that the symbol for the unit mole is mol for AQA GCSE Chemistry 8462 Unit 4.3.

Relative Formula Mass

The mass of one mole of a substance in grams, numerically equal to the sum of the relative atomic masses of all atoms in its formula.

Mole

A unit of measurement for the amount of substance, defined as containing 6.02 x 10^23 particles.

Relative Formula Mass

The sum of the relative atomic masses of all atoms in a chemical formula, expressed in grams per mole.

Mole

A unit of measurement for the amount of substance, defined as containing exactly 6.02 x 10^23 particles.

Avogadro constant

The number of atoms, molecules, or ions in one mole of a substance, approximately 6.02 x 10^23.

Avogadro constant

The number of atoms, molecules, or ions in one mole of a substance, approximately 6.02 x 10^23.

Mole

The unit of measurement for the amount of substance, symbolized as 'mol'. In Moles (HT only), this term helps explain (HT only) Define the Avogadro constant as the number of atoms, molecules or ions in one mole of a substance for AQA GCSE Chemistry 8462 Unit 4.3.

Avogadro constant

The number of atoms, molecules, or ions in one mole of a substance, approximately 6.02 x 10^23.

Mole

A unit of measurement for the amount of substance, defined as containing 6.02 x 10^23 particles.

Mole

A unit of measurement for the amount of substance, defined as containing 6.02 x 10^23 particles.

Avogadro constant

The number of atoms, molecules, or ions in one mole of a substance, approximately 6.02 x 10^23.

Relative Formula Mass

The sum of the relative atomic masses of all atoms in a chemical formula. In Moles (HT only), this term helps explain (HT only) Use relative formula mass to calculate the number of moles in a given mass of a substance for AQA GCSE Chemistry 8462 Unit 4.3.

Mole

A unit of measurement for the amount of substance, defined as containing 6.02 x 10^23 particles.

Mole

A unit of measurement for the amount of substance, representing 6.02 x 10^23 particles. In Moles (HT only), this term helps explain (HT only) Use the number of moles and relative formula mass to calculate the mass of a substance for AQA GCSE Chemistry 8462 Unit 4.3.

Relative Formula Mass

The sum of the relative atomic masses of all atoms in a chemical formula. In Moles (HT only), this term helps explain (HT only) Use the number of moles and relative formula mass to calculate the mass of a substance for AQA GCSE Chemistry 8462 Unit 4.3.

Mole

A unit of measurement for the amount of substance, defined as containing 6.02 x 10^23 particles.

Relative Formula Mass

The sum of the relative atomic masses of all atoms in a chemical formula, used to calculate moles.

Mole

The unit of measurement for the amount of substance, symbolized as 'mol'. In Moles (HT only), this term helps explain (HT only) Recognise and use decimal form in mole calculations. (MS 1a) for AQA GCSE Chemistry 8462 Unit 4.3.

Decimal Form

A numerical representation that uses a decimal point to denote fractions of whole numbers.

Avogadro constant

The number of atoms, molecules, or ions in one mole of a substance, approximately 6.02 x 10^23.

Standard form

A way of expressing numbers that are too large or too small to be conveniently written in decimal form, typically in the format a x 10^n.

Significant Figures

Digits in a number that contribute to its precision, including all non-zero digits, zeros between significant digits, and trailing zeros in the decimal portion.

Amount of Substance

A measure of the quantity of substance, expressed in moles, that relates to the number of particles present.

mathematical symbols

Symbols used to represent mathematical concepts, such as = for equality, < for less than, > for greater than, and proportionality symbols.

approximate relationships

Relationships that indicate a rough or estimated equivalence between quantities, rather than an exact value.

Balanced Chemical Equation

An equation that shows the reactants and products of a chemical reaction with equal numbers of atoms for each element on both sides.

Mole Ratio

The ratio of moles of one substance to the moles of another substance in a balanced chemical equation.