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Mainly chemistry lessons - I hope you find them useful, any positive feedback or constructive criticism is welcomed.

Mainly chemistry lessons - I hope you find them useful, any positive feedback or constructive criticism is welcomed.
Atomic & Ionic Radius, Electronegativity Trends
martinporter123

Atomic & Ionic Radius, Electronegativity Trends

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Originally made for the BTEC National Applied Science Level 3 course, this is the first lesson of Unit 1 Learning Aim A2. The lesson introduces the concept of atomic radius trends in a simple format, getting the students to make predictions for trends based on prior knowledge and addressing misconceptions. Trends across periods and down group addressed. Then it moves onto how the radii of cations and anions change across periods and down groups. Finally trends in electronegativity is discussed and then students have to use data to describe and explain trends across periods and down groups. Final plenary are some past exam questions from A-level Chemistry.
First Ionisation Energies and Electron Affinity
martinporter123

First Ionisation Energies and Electron Affinity

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Originally made for the BTEC National Applied Science Level 3 course, this is the second lesson of Unit 1 Learning Aim A2. The lesson introduces the concept of first ionisation energies and electron affinity trends across period and down groups. Students will define each and apply knowledge to problems and tasks throughout the lesson. Anomalies in period 2 & 3 are explained simply using knowledge gained about how the sub-shells are filled. Finally trends in electron affinity are explained and also explains why the second electron affinity of oxygen is higher than the first. Final plenary are some past exam questions from A-level Chemistry chosen to closely match the content.