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GCSE Chemistry · key term
A reaction in which an acid reacts with a base to form a salt and water.
Used by AQA, Edexcel and OCR
Specification 4.4.2.2, 4.4.2.4 · Paper 1
A reaction in which an acid reacts with a base. Reactions with metal oxides or hydroxides produce a salt and water; metal carbonates also produce carbon dioxide.
A reaction in which an acid reacts with a base or alkali; hydrogen ions and hydroxide ions form water in an acid–alkali neutralisation.
Specification 3.6, 3.9, 3.13, 3.14, 5.23C, 5.24C, 7.9, 9.30C · Paper 1, Paper 2
The reaction of an acid with a base to form a salt and water.
Revise: Core Practical: pH Change InvestigationThe pH may change sharply around neutralisation, so several readings through that region are more informative than one final reading. Universal indicator paper gives an estimated pH from its colour, whereas a pH meter can provide a more precise reading.
A reaction between an acid and a base.
A chemical reaction in which an acid reacts with a base.
A reaction in which an acid reacts with a base; in acid–alkali neutralisation, hydrogen ions react with hydroxide ions to form water.
A reaction between an acid and a base that forms a salt and water.
A reaction in which an acid reacts with a base so that the acid's hydrogen ions are neutralised and a salt is formed.
A reaction in which an acid and a base react to form a salt; water is also formed when the base supplies hydroxide ions.
A reaction in which an acid reacts with a base. Here, sulfuric acid transfers hydrogen ions to ammonia.
A reaction in which an acid and a base react to form a salt and water.
A reaction between an acid and a base that produces a salt and water.
Specification C3.3d, C3.3e, C3.3i, C6.1h, C6.1j, PAG 7 · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A reaction in which an acid reacts with a base, including an alkali, to form a salt and water.
Revise: Neutralisation ReactionsNeutralisation can be used to prepare a sample of a soluble salt. To make copper(II) sulfate crystals, warm dilute sulfuric acid in a beaker and add copper(II) oxide a little at a time, stirring. Add enough oxide that some remains unreacted: because it is insoluble, the excess shows that the acid has been used up.
A reaction in which an acid reacts with an alkali or base to form a salt and water.
A reaction in which an acid and a base react to form a salt; water is also formed when the base is a hydroxide.
A reaction in which an acid reacts with a base to form a salt.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
A reaction in which an acid and an alkali react to form a salt and water.
Revise: NeutralisationNeutralisation rearranges the substances into two new products: an ionic compound called a salt, which is usually dissolved in the water, and water itself.
A reaction in which an acid reacts with a base or alkali to form a salt and, where appropriate, water.
Do not say that an acid and a base merely “mix”: state that they react in a neutralisation reaction.
Do not assume that every neutralisation mixture finishes at pH 7. It will remain acidic or alkaline if one reactant is in excess.
On a curve where alkali is added to acid, explain the rise in pH by the removal of hydrogen ions during neutralisation. After the steep section, added alkali is in excess.
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