Unit consistency in calculations
What Unit consistency in calculations means in Chemistry A-Level, as defined for OCR.
Definitions of Unit consistency in calculations
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain Unit consistency in calculations in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Matching the computed value and stating g or mol, and checking significant figures in the chosen option.
Check that the unit of the chosen option matches dm³ or mol as required.
Topics that use Unit consistency in calculations
- Amount of substance (OCR A-Level)
Related terms
- amount of substance
- atom economy
- Atom economy and by-products
- Concentration in mol dm⁻³
- Converting between cm³ and dm³
- Converting between moles and number of particles
- Empirical formula
- Empirical formula mass and molecular formula multiplier
Using Unit consistency in calculations 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.
Practise Chemistry questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge