Equations to Memorise

In the Edexcel GCSE Combined Science exam (1SC0), some equations are provided on an equations sheet and some are not. The equations listed in this lesson are those you must recall from memory — they will not be on the sheet. Organise your revision around learning these by heart.

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How Equations Are Tested

• If an equation is on the recall list, the question may say "Use the correct equation from your knowledge" or simply "Calculate..." without giving you the formula.
• If an equation is on the sheet, the question may say "Use the equation from the Physics Equations Sheet."
• Either way, you must write the equation as the first line of your working.

Exam Tip: Learning all recall equations means you never waste exam time searching the equation sheet for something that is not there.

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Biology Equations to Recall

Biology has fewer mathematical equations, but you must recall these key relationships: