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Mixture

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Key Stage 2

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Meaning

A mixture is when two or more different substances are in the same place or are part of the same object.

Singular Noun: Mixture
Plural Noun: Mixtures
Verb: To mix

About Mixtures

Many materials are mixtures of different substances.
Mixtures can usually be separated, but sometimes it is very difficult to do.
Mixing is reversible change. Once two substances are mixed they can usually be separated again.

Examples

Sea Water Muddy Puddle Beach
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MuddyPuddle.png
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Seawater is mixture of salt and water. This puddle is a mixture of mud and water. The beach is a mixture of sand and pebbles.


Key Stage 3

Meaning

A mixture is a substance which contains more than one type of chemical.

About Mixtures

A mixture can be made of different elements or it can be made of different compounds.
The different chemicals in a mixture are not chemically bonded with each other.
Mixtures can be separated without a chemical reaction.

Examples

ElementMixture1.png
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A mixture of two different elements. A mixture of two molecular elements. A mixture of three different elements.
CompoundMixture.png
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CompoundElementMixture2.png
A mixture of two compounds. A mixture of a compound and an element. A mixture of a compound and an element.

Key Stage 4

Meaning

A mixture is a substance which contains more than one type of chemical.

About Mixtures

Mixtures can be made of different elements, compounds or both.
A mixture of metal elements is called an alloy.
Mixtures can be separated by non-chemical processes.

Formulations

A useful mixture may be referred to as a formulation. This is a mixture which combines the useful properties of several chemicals in the mixture.

Some examples of formulations are:

References

AQA

Mixture, pages 12, 18-19, 262-5, GCSE Chemistry; Student Book, Collins, AQA
Mixture; separation, pages 18-9, GCSE Chemistry; Student Book, Collins, AQA
Mixtures, page 16-18, GCSE Chemistry; The Revision Guide, CGP, AQA
Mixtures, pages 100-103, 150, GCSE Combined Science; The Revision Guide, CGP, AQA
Mixtures, pages 136-7, GCSE Combined Science Trilogy 1, Hodder, AQA
Mixtures, pages 155, GCSE Combined Science Trilogy 2, Hodder, AQA
Mixtures, pages 21-2, 203, GCSE Chemistry, Hodder, AQA
Mixtures, pages 34-41, GCSE Chemistry, CGP, AQA
Mixtures, pages 34-41, GCSE Combined Science Trilogy; Chemistry, CGP, AQA
Mixtures, pages 8-9, 148-149, 180-181, GCSE Chemistry; Third Edition, Oxford University Press, AQA
Mixtures; formulations, page 204, GCSE Chemistry, Hodder, AQA
Mixtures; Formulations, pages 156, GCSE Combined Science Trilogy 2, Hodder, AQA
Mixtures; Melting and boiling points, pages 155-6, GCSE Combined Science Trilogy 2, Hodder, AQA
Mixtures; melting and boiling points, pages 203-4, GCSE Chemistry, Hodder, AQA
Mixtures; rock salt, pages 25, GCSE Chemistry, Hodder, AQA
Mixtures; separation of, pages 137-40, GCSE Combined Science Trilogy 1, Hodder, AQA
Mixtures; separation of, pages 22-5, GCSE Chemistry, Hodder, AQA
Mixtures; uses of, pages 203-4, GCSE Chemistry, Hodder, AQA

Edexcel

Mixtures, page 36, GCSE Chemistry; The Revision Guide, CGP, Edexcel
Mixtures, page 99, GCSE Combined Science; The Revision Guide, CGP, Edexcel
Mixtures, pages 100, 101, GCSE Chemistry, CGP, Edexcel
Mixtures, pages 148-149, GCSE Combined Science, Pearson Edexcel
Mixtures, pages 4-5, GCSE Chemistry, Pearson, Edexcel
Mixtures; separation, page 10, GCSE Chemistry, Pearson, Edexcel
Mixtures; separation, page 154, GCSE Combined Science, Pearson Edexcel

OCR

Mixtures, pages 26-29, 78, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR
Mixtures, pages 40-49, Gateway GCSE Chemistry, Oxford, OCR
Mixtures, pages 98-103, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR