Chemistry A-Level
Weighted mean mass
What Weighted mean mass means in Chemistry A-Level, as defined for OCR.
Definition of Weighted mean mass
Check what you remember
Read the wording for your board, then hide it and explain Weighted mean mass in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
A mean in which each isotope mass is multiplied by its relative abundance, the products are added, and the sum is divided by the total abundance.
Topics that use Weighted mean mass
- Atomic structure and isotopes (OCR A-Level)
Related terms
- atomic number
- Calculation accuracy
- isotopes
- Isotopic abundance
- Isotopic abundance and its effect on the mean
- mass number
- Molecular versus ionic substances
- Relative atomic mass
Using Weighted mean mass in the exam
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