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AQA GCSE Combined Science Trilogy · 8464
Describe a chemical mixture as consisting of two or more elements or compounds that are not chemically combined together.
Understand that the individual chemical properties of each substance within a mixture remain entirely unchanged.
Explain how mixtures can be practically separated by physical processes, specifically detailing filtration, crystallisation, simple distillation, fractional distillation, and chromatography.
Understand that these physical separation processes do not involve underlying chemical reactions and ensure no new substances are made.
Describe, explain, and give specific real-world examples of these specified processes of separation.
Suggest the most suitable separation and purification techniques for specific mixtures when provided with appropriate contextual information.