Synopsis
There are thought to be as many as 100 million different species on Earth, but every one of them has sprung from just a single life brought into existence by the same laws that govern how our universe itself behaves. In this film, Professor Brian Cox discovers how a few fundamental laws gave birth to the most complex, diverse and unique force in the universe.
Chemical Calculations (J250) | GCSE Bitesize Revision
Spec references J250: C2.1. This video provides an overview of how the masses of subatomic particles are used to calculate atomic masses. It then explains Relative Atomic Mass using chlorine isotopes as an example, followed by an introduction to formula masses, mole calculations, and percentage mass. The video concludes with discussions on the conservation of mass and atom economy. Given its fast pace, the content is likely better suited for revision rather than introducing these concepts.
Reversible Reactions - the Haber process | GCSE Bitesize Revision
This video provides an overview of ammonia production through the Haber process, briefly touching on the necessary conditions but without fully detailing them.