Relative atomic mass
What Relative atomic mass means in Chemistry GCSE, as defined for AQA.
Definitions of Relative atomic mass
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Reference: AQA
A weighted average that reflects the abundance of each isotope, relative to 1/12 of the mass of a carbon-12 atom.
This increases going down Group 0 because atoms have more protons and neutrons.
A weighted mean that depends on the abundance of each isotope of an element.
Topics that use Relative atomic mass
- Development of the periodic table (AQA GCSE)
- Group 0 (AQA GCSE)
- Relative atomic mass (AQA GCSE)
Related terms
- Isotopes
- Conflict between ordering principle and chemical properties
- Development of the periodic table
- Discovery of new elements
- Electron configuration
- Electronic structure and stability
- Evidence-based acceptance of models
- Incompleteness of scientific evidence
Using Relative atomic mass in the exam
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