Synopsis
Spec references J248: C2.2di, C2.2e, C2.2f J250: C2.2di, C2.2e, C2.2f. Ideal for topic revision, this video explains how ions are formed through the loss and gain of electrons. It covers the differences in how metals and non-metals react, focusing on electron transfer. The video also explains how ion charges result from an imbalance between protons and electrons and relates the charge of ions to their group number. Additionally, it introduces the concept of ionic bonding, emphasising electrostatic forces of attraction and the use of dot and cross diagrams. A brief introduction to ionic formulae is also provided.
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.