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CLASS 8, 9_ Structure of an Atom

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http://www.rsc.org/learn-chemistry/resource/res00001433/build-an-atom-simulation

https://www.youtube.com/watch?v=wjvbMg66fBo&list=PL2gIzhGnfS9L2E0qhVX5fnpAWIhv6hQ7m

https://www.youtube.com/watch?v=PrhSTHYHSWM&list=PL2gIzhGnfS9L2E0qhVX5fnpAWIhv6hQ7m&index=9

Atomic Mass Number

Ions

Just how small is atom

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