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Atomic structure, isotopes and mass spectrometry · A Level Chemistry · Courselo

Courselo

Chemistry
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Physical foundations

Atomic structure, isotopes and mass spectrometry

Physical foundations · Lesson 2 of 5

Lesson 2 of 5

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Unit 1

Physical foundations

5 lessons · 8 h 30 min of study

Amount of substance, formulae and reacting masses2 h of study
Atomic structure, isotopes and mass spectrometryReading · 0%
Electronic structure and periodicity1 h 30 min of study
Bonding, structure and properties of matter2 h 30 min of study
States of matter and ideal gas equations1 h of study

This unit is ≈11% of the Chemistry, across 5 lessons. Full syllabus

Lesson 2 of 5 · Physical foundations

Atomic structure, isotopes and mass spectrometry

3 quick checks≈2% of the testFoundational: Foundational: the groundwork the rest of the unit builds on

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By the end you’ll be able to

Describe the relative charge and relative mass of protons, neutrons and electrons, and relate atomic number and mass number to the numbers of these particles in atoms and ions.
Define isotopes as atoms of the same element with the same number of protons but different numbers of neutrons, and explain why isotopes of an element have similar chemical properties.

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Adaptive questions on atomic structure, isotopes and mass spectrometry.

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Calculate relative atomic mass from isotopic masses and relative abundances, including data obtained from mass spectra.

Explain the basic principles of time-of-flight mass spectrometry in terms of ionisation, acceleration, flight through the instrument and detection, at the level needed to interpret spectral data.

Interpret mass spectra to identify isotopes and determine relative isotopic abundance, and recognise molecular ion peaks and simple fragmentation patterns where specified by the course.

Deduce the numbers of protons, neutrons and electrons in atoms and ions from nuclide notation and related data.

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