Transition Metal Colours | A level Chemistry Exam Question Walkthrough

This video is a full A‑Level Chemistry exam‑question walkthrough on transition‑metal colours and colourimetry, taking you through the reasoning, explanations and calculations in the way examiners expect. You can download the full exam question using the link below: https://drive.google.com/file/d/1zg5p2geujDvMqppTiAXY7oaYpsyqXYHN/view?usp=drive_link Links directory for all YouTube videos: https://drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view?usp=drive_link The walkthrough shows the exam‑marking points in purple, and the thinking‑out‑loud development and annotations in red/purple, so you can clearly see what earns marks and what helps you understand the chemistry. It covers key ideas that appear across A‑Level Chemistry, including why transition‑metal complexes are coloured, how ligand and oxidation‑state changes affect colour, how to determine unknown concentrations using colorimetry, and how to calculate energy changes using Planck’s constant and wavelength. What this walkthrough covers Why transition‑metal complexes are coloured Factors affecting colour: ligand type, coordination, oxidation state Using colorimetry to determine unknown concentrations Calculating energy changes using Planck’s constant and wavelength Chapters 00:00 Intro & Socials 00:05 How to use this walkthrough 00:49 Why TM complexes are coloured \| Factors affecting colour \| Determining unknown concentration with colorimetry 05:41 Calculating energy change using the Planck constant and wavelength How this was made This walkthrough was created using slide‑based explanations, with colour‑coded annotations to separate exam‑marking points from the thinking process, so you can pause, rewatch and build your own written answers from the structure shown. 📲 Connect with Us: 📸 Instagram: @chemistrytutor123 🎵 TikTok: @chemistrytutor123 📧 Email: thechemistrytutor123@gmail.com