Chemistry A-Level
Significant figures and unit consistency
What Significant figures and unit consistency means in Chemistry A-Level, as defined for OCR.
Definition of Significant figures and unit consistency
Check what you remember
Read the wording for your board, then hide it and explain Significant figures and unit consistency in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Evaluates k to an appropriate number of significant figures with correct arithmetic, keeping concentrations in mol dm⁻³ and rate in mol dm⁻³ s⁻¹.
Topics that use Significant figures and unit consistency
- How fast? (OCR A-Level)
Related terms
- Calculating rate and concentration from the rate equation
- Colorimetry
- Concentration–time graphs
- Constant half-life
- continuous monitoring
- Controlled comparison of experiments
- Deducing order from initial-rate data
- Deducing order with respect to a reactant
Using Significant figures and unit consistency in the exam
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