GradeGen

How each exam board covers it

AQA GCSE Chemistry · 8462

Specification 4.1.1.2, 4.7.1.1, 4.8.1.1, 4.8.1.2, 4.9.1.1 · Paper 1, Paper 2

Two or more elements or compounds together without being chemically combined.
A mixture contains two or more elements or compounds that are not chemically combined. Each substance keeps its chemical properties. The amounts can vary: salt water, for example, can contain a little salt or a lot.
Revise: Mixtures and Separation Techniques
A combination of substances that are not chemically bonded to one another.
Revise: Alkanes and Crude Oil
A material containing two or more substances that are physically combined rather than chemically bonded into one substance.
Revise: Pure Substances

2 more notes

Two or more substances together that are not chemically bonded to one another.
Revise: Formulations
Two or more substances together that are not chemically combined.
Revise: Current Atmospheric Composition

AQA Chemistry past papers

Edexcel GCSE Chemistry · 1CH0

Specification 2.5, 2.6, 8.2 · Paper 1, Paper 2

Two or more substances physically combined but not chemically bonded to one another.
If salt is dissolved in it, the result is a mixture, even though the liquid may still look clear.
Revise: Pure Substances vs Mixtures
Two or more substances together that are not chemically joined and may be present in different proportions.
Revise: Interpretation of Melting Point Data
Two or more substances together without being chemically bonded into a single substance.
Revise: Crude Oil

Edexcel Chemistry past papers

OCR GCSE Chemistry A · J248

Specification C2.1a, C2.1e, C2.1f, C2.1j, C2.1k, PAG 4, PAG 7 · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

Two or more substances present together without being chemically bonded to one another.
A sample containing two or more chemical substances is a mixture and is therefore chemically impure. The substances in a mixture are together but are not chemically bonded to one another. Each substance keeps its chemical identity, and the proportions can vary.
Revise: Defining Purity
A substance containing two or more elements or compounds that are together but not chemically combined, so their proportions can vary.
Revise: Formulations and Mixtures
A mixture is two or more substances together without being chemically bonded; its components can be separated by physical methods.
Revise: Separation Techniques

4 more notes

A material containing two or more substances that are physically mixed rather than chemically bonded.
Revise: Selecting Purification Methods
Two or more substances that are together but are not chemically joined.
Revise: Chromatography Applications
A mixture contains two or more substances that are not chemically joined and can be separated by physical methods.
Revise: Distillation Practical
A material containing two or more substances that are not chemically bonded together.
Revise: General Separation and Purification Techniques

OCR Chemistry A past papers

OCR GCSE Chemistry B · J258

Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

A mixture contains two or more substances that are not chemically bonded together. Many useful materials are mixtures, but their ingredients are not always chosen at random. A formulation is a mixture designed for a purpose: its components are selected for particular jobs and combined in carefully measured proportions.
Revise: Formulations
Two or more different substances together without being chemically bonded to one another.
Revise: Purity definition

OCR Chemistry B past papers

Exam tips

1
Choose a method from what you are told about the mixture: insoluble or dissolved solid, solvent to be recovered, miscible liquids with different boiling points, or substances that travel differently in a solvent.
2
Avoid claiming that every impurity changes a boiling point in the same direction. The reliable distinction is a specific temperature for a pure substance compared with a range for a mixture.
3
A compound is not a mixture: its different elements are chemically bonded. In a mixture, substances are not chemically bonded to one another.

How each exam board covers it

AQA GCSE Chemistry · 8462

Specification 4.1.1.2, 4.7.1.1, 4.8.1.1, 4.8.1.2, 4.9.1.1 · Paper 1, Paper 2

Two or more elements or compounds together without being chemically combined.
A mixture contains two or more elements or compounds that are not chemically combined. Each substance keeps its chemical properties. The amounts can vary: salt water, for example, can contain a little salt or a lot.
Revise: Mixtures and Separation Techniques
A combination of substances that are not chemically bonded to one another.
Revise: Alkanes and Crude Oil
A material containing two or more substances that are physically combined rather than chemically bonded into one substance.
Revise: Pure Substances

2 more notes

Two or more substances together that are not chemically bonded to one another.
Revise: Formulations
Two or more substances together that are not chemically combined.
Revise: Current Atmospheric Composition

AQA Chemistry past papers

Edexcel GCSE Chemistry · 1CH0

Specification 2.5, 2.6, 8.2 · Paper 1, Paper 2

Two or more substances physically combined but not chemically bonded to one another.
If salt is dissolved in it, the result is a mixture, even though the liquid may still look clear.
Revise: Pure Substances vs Mixtures
Two or more substances together that are not chemically joined and may be present in different proportions.
Revise: Interpretation of Melting Point Data
Two or more substances together without being chemically bonded into a single substance.
Revise: Crude Oil

Edexcel Chemistry past papers

OCR GCSE Chemistry A · J248

Specification C2.1a, C2.1e, C2.1f, C2.1j, C2.1k, PAG 4, PAG 7 · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

Two or more substances present together without being chemically bonded to one another.
A sample containing two or more chemical substances is a mixture and is therefore chemically impure. The substances in a mixture are together but are not chemically bonded to one another. Each substance keeps its chemical identity, and the proportions can vary.
Revise: Defining Purity
A substance containing two or more elements or compounds that are together but not chemically combined, so their proportions can vary.
Revise: Formulations and Mixtures
A mixture is two or more substances together without being chemically bonded; its components can be separated by physical methods.
Revise: Separation Techniques

4 more notes

A material containing two or more substances that are physically mixed rather than chemically bonded.
Revise: Selecting Purification Methods
Two or more substances that are together but are not chemically joined.
Revise: Chromatography Applications
A mixture contains two or more substances that are not chemically joined and can be separated by physical methods.
Revise: Distillation Practical
A material containing two or more substances that are not chemically bonded together.
Revise: General Separation and Purification Techniques

OCR Chemistry A past papers

OCR GCSE Chemistry B · J258

Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)

A mixture contains two or more substances that are not chemically bonded together. Many useful materials are mixtures, but their ingredients are not always chosen at random. A formulation is a mixture designed for a purpose: its components are selected for particular jobs and combined in carefully measured proportions.
Revise: Formulations
Two or more different substances together without being chemically bonded to one another.
Revise: Purity definition

OCR Chemistry B past papers

Exam tips

1
Choose a method from what you are told about the mixture: insoluble or dissolved solid, solvent to be recovered, miscible liquids with different boiling points, or substances that travel differently in a solvent.
2
Avoid claiming that every impurity changes a boiling point in the same direction. The reliable distinction is a specific temperature for a pure substance compared with a range for a mixture.
3
A compound is not a mixture: its different elements are chemically bonded. In a mixture, substances are not chemically bonded to one another.

Mixture

Definition

How each exam board covers it

AQA GCSE Chemistry · 8462

Edexcel GCSE Chemistry · 1CH0

OCR GCSE Chemistry A · J248

OCR GCSE Chemistry B · J258

Exam tips

Revise Chemistry with GradeGen

Mixture

Definition

How each exam board covers it

AQA GCSE Chemistry · 8462

Edexcel GCSE Chemistry · 1CH0

OCR GCSE Chemistry A · J248

OCR GCSE Chemistry B · J258

Exam tips

Revise Chemistry with GradeGen

Definition

How each exam board covers it

AQA GCSE Chemistry · 8462

Edexcel GCSE Chemistry · 1CH0

OCR GCSE Chemistry A · J248

OCR GCSE Chemistry B · J258

Exam tips

Related key terms

Revise Chemistry with GradeGen

Definition

How each exam board covers it

AQA GCSE Chemistry · 8462

Edexcel GCSE Chemistry · 1CH0

OCR GCSE Chemistry A · J248

OCR GCSE Chemistry B · J258

Exam tips

Related key terms

Revise Chemistry with GradeGen