GCSE Chemistry - Elements, Isotopes & Relative Atomic Mass

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*** WHAT'S COVERED ***
1. Elements and Atomic Structure
* Recap of subatomic particles (protons, neutrons, electrons).
* The significance of proton number (atomic number) for element identification.
* Overview of the Periodic Table, nuclear symbols, and element symbols.
2. Isotopes Explained
* Definition of isotopes: atoms of the same element with the same proton number but different neutron numbers.
* Illustration with Carbon-12 and Carbon-13.
* Note on how isotopes affect mass number while chemical properties remain largely similar.
3. Relative Atomic Mass (Ar)
* Concept of Ar as the weighted average mass of an element's isotopes, taking into account their abundances.
* Formula for calculating Ar based on isotopic masses and percentage abundances.
* A worked example: calculating the Ar of copper.

*** CHAPTERS ***
0:00 Introduction
0:20 Proton Number
0:49 Nuclear Symbols
2:24 What are Isotopes?
3:32 Chemical Behaviour of Isotopes
3:42 Relative Atomic Mass (Ar)
3:58 Isotopic Abundance
4:48 Calculating Ar

*** PLAYLISTS ***






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