N5 Chemistry Isotopes and Ions
Channel: Andrew Hay
Date: 2020-05-30

Some atom revision here on how we write the symbols and numbers, and some new content covering isotopes and ions.
0:00 Intro and content
0:52 Atomic numbers and nuclide notation
3:00 Isotopes
5:10 Definition
7:10 Mass numbers are a special number
7:24 Isotopes tell us how old the planet is
8:15 Ions
10:20 Making atoms happy
11:20 Why are ions charged?
12:24 Showing ions in nuclide notation
13:09 Recap of content
15:09 Why are group 8 unreactive?
15:45 One atom loses two, but the other only gains one. Problem?