Grade+9+class+notes

media type="youtube" key="ssaUusY6hWM" height="242" width="383" align="center" =Class notes =

**9F 12th April, 9A 14th April**

structure of an atom
 * 9f 13th April 9A 15th April **

**9F 14th/19th April 9A 1th/21st April**

Atomic structure - atom builder interactive

see Resourcesces for more information