Synopsis
Spec references J249: P3.1e, P3.1f, P3.2a, P3.2b J250: P3.1d, P3.1e, P3.2a, P3.2b. Circuit symbols, differences between series and parallel circuits, models of current and potential difference, measuring current and pd, effect on potential difference of adding more batteries. Description and animation.
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.