Key term for OCR GCSE Chemistry B, used in Distillation.
A gradual change in temperature from one location to another, such as from the hot bottom to the cooler top of a column.
Temperature gradient appears in OCR GCSE Chemistry B revision content for Practical skills, especially Distillation and Apparatus and techniques.
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Chemicals of the natural environment
Crude oil and hydrocarbons • Fractional distillation
