videos for revision

        Rates of reaction


     https://www.youtube.com/watch?v=OttRV5ykP7A 

      https://www.youtube.com/watch?v=NhdtqnEfa9w         measure of rate of reaction

 

      https://www.youtube.com/watch?v=ExHV_cFWYSM   factors affecting rate of reaction

     electrostatics 

https://www.youtube.com/watch?v=vBPOrwSTkZc lightning and thundering

https://www.youtube.com/watch?v=Cz_uYBx1G5s lightning and spark (best)

https://www.youtube.com/watch?v=joz1OSg_c8k  safety measures

https://www.youtube.com/watch?v=Xqt2gAalV4Y  van de Graff generator

          electricity 

https://www.youtube.com/watch?v=8gvJzrjwjds  circuit

https://www.youtube.com/watch?v=2T30KEAM86Y rheostat

https://www.youtube.com/watch?v=t6pqrkWSWL8 conventional current flow

https://www.youtube.com/watch?v=m4jzgqZu-4s&t=106s    potential difference, series and parallel




   classification  and variation

https://www.youtube.com/watch?v=W_CnR0Ak604   selective breeding


https://www.youtube.com/watch?v=vnktXHBvE8s    darwins natural selection

https://www.youtube.com/watch?v=aeH1FzqdQZ0  dependent and independent variables

https://www.youtube.com/watch?v=EJTqG-RQeT8  dependent and independent variables