The Mass Spectrometer
A mass spectrometer can be used to experimentally measure the percentage abundances of isotopes in a sample of an element.

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Key terms in this lesson
- Isotopes
- Atoms of the same element with the same number of protons but different numbers of neutrons.
- Ion
- A positively or negatively charged atom or group of atoms, formed by the loss or gain of electrons.
More in Atoms, Ions and Compounds
- Ions
- Carbon-12
- Relative Isotopic Mass
- Relative Atomic Mass
- Calculating Relative Atomic Mass
- Chemical Formulae
- Polyatomic ions
- Chemical Equations
All 17 lessons in Atoms, Ions and Compounds · All OCR AS-level Chemistry topics