• 1What the periodic table on screen actually carries25 minWatch
• 2Protons, neutrons, electrons, and what an isotope changes27 minWatch
• 3Where the quantum model came from, and what it replaced29 minWatch
• 4Orbitals: s, p, d, and the shapes worth remembering25 minWatch
• 5Writing an electron configuration without counting on your fingers27 minWatch
• 6Ions, and which electrons leave first29 minWatch
• 7Atomic radius across a period and down a group25 minWatch
• 8Ionisation energy, and the two places the trend breaks27 minWatch
• 9Electronegativity, and why it is the one number you memorise29 minWatch
• 10Reading a group: the descriptive chemistry that is actually tested25 minWatch