What Is an Isotope? The Ice That SINKS

Normal ice floats. So why does this ice cube sink straight to the bottom? The answer is hiding inside its hydrogen atoms: one extra neutron. In this episode we meet isotopes, the same element with a different number of neutrons. We look at hydrogen's three versions, heavy water, why isotopes share the same chemistry, how carbon-14 dates ancient things, why chlorine's mass is 35.45, and the rare uranium-235 that changed history. ⚛️ A new NuclearVerse episode every day. Subscribe to AtomX:    / @atomx-2   Chapters: 0:00 The ice cube that sinks 0:20 Same element, different neutrons 0:32 Where the name comes from 0:53 Hydrogen's three faces 1:13 Heavy water 1:29 Same chemistry, different weight 1:50 Carbon-14: the clock inside you 2:18 Quick physics corner: why chlorine is 35.45 2:38 The rare uranium that changed history 3:01 3,000+ isotopes, ~250 stable 3:15 Takeaway + next episode Sources: Soddy, Nature 92, 399 (1913); isotope abundances and atomic weights from IUPAC/CIAAW; half-lives and nuclide counts from NNDC (Brookhaven). 3D animations are conceptual visualizations. ◀ Previous: Protons vs. Neutrons: The Twins That Are NOT (Ep 12):    • Protons vs. Neutrons: The Twins That Are NOT   ▶ Next: Why Don't Protons Fly Apart? (Ep 14) Subscribe so you never miss tomorrow's episode. #Physics #Science #Isotopes #NuclearPhysics #NuclearVerse 📚 Helpful for Class 11 & Class 12 Physics, IIT JEE and NEET preparation. #Class11Physics #Class12Physics #IITJEE #NEET