Chemistry A-Level
Significant figures and standard form
What Significant figures and standard form means in Chemistry A-Level, as defined for OCR.
Definition of Significant figures and standard form
Check what you remember
Read the wording for your board, then hide it and explain Significant figures and standard form in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Rounding the final answer to an appropriate number of significant figures consistent with the data, and using standard form and correct powers of ten for very large or very small quantities.
Topics that use Significant figures and standard form
- Analysis (OCR A-Level)
Related terms
- Choice of scale
- Consistent unit conversion
- Gradient
- Line of best fit
- Precision of measurement
- Reporting derived results
- Selecting the correct mathematical relationship
- Units of gradient
Using Significant figures and standard form in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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