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  • 5 May 2024
    Geoffrey Neuss
    Putting Topic S1 into context (1)
    Omar, at DPIB level that would seem reasonable, since students are expected to know that temperature is related to the average translational kinetic energy of the particles, so at zero Kelvin (absolute zero) the particles are not moving.
  • Thank you Geoff for your reply. I am also a chemist. I just want to make sure how we would teach it for students in our chemistry subject. So as i got from you, we teach it as particles ceases and stop moving? 
  • 3 May 2024
    John Oberthier
    S2.4 From models to materials
    Geoff, (not Richard!)  I fear I am becoming more  like my parents everyday, mixing up names of people that I clearly should not mix up....The Richard Thornley videos above must have confused me. John
  • 2 May 2024
    Geoffrey Neuss
    S2.4 From models to materials
    Hi John,  You make a valid point (to Richard?) about HF and BF3 - although fluorine with an electronegativity value of 4 is always a problem with the ~ 1.8 rule of thumb -  but  I'm still not convinced that triangular bonding...