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GCSE Combined Science · key term
A decrease in concentration caused by adding solvent, increasing the volume of solution without changing the mass of dissolved solute.
Used by AQA and OCR
Specification 4.5.2.6 · Paper 3, Paper 4
Revise: Concentrations of SolutionsAdding water to an aqueous solution therefore causes dilution. No solute is removed, but the solution volume increases, so the mass of solute per cubic decimetre decreases.
Specification C3.1j · Chemistry Paper 1
Reducing the concentration of a solution by adding solvent, so the same mass of solute is distributed through a larger volume.
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Adding solvent produces this change, called dilution. The solute is not removed: there is simply less of it in each unit volume. Doubling the total solution volume halves the concentration.
