chem-bio.info by Hosni on Instagram: "How the Mass Spectrometer Actually Works (Explained for IAL Chemistry Students) Ever wondered how scientists can tell the difference between isotopes of the same element? In this video, we’ll break down how a mass spectrometer works — from ionisation to detection — and show you exactly how exam questions test it in Edexcel IAL Chemistry. You’ll learn: • The principle and stages of mass spectrometry • The function of each component (ion source, analyser, dete