OCR GCSE Chemistry A · J248
Specification CM2.3iv · Paper 1 (Foundation), Paper 3 (Higher)
Revise: Standard Form with NanoparticlesThe minus sign belongs to the index: it does not make the measurement negative.
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GCSE Chemistry · key term
The power in an expression such as ; it shows how many places the digits change in place value.
Used by OCR
Specification CM2.3iv · Paper 1 (Foundation), Paper 3 (Higher)
Revise: Standard Form with NanoparticlesThe minus sign belongs to the index: it does not make the measurement negative.
A negative index means a small number: is one billionth, not negative one billion.
After multiplying or dividing, check whether the coefficient needs renormalising and adjust the index accordingly.
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