AimstextConsiderationsThe table of particles includes spin. This is introduced in the "further atomic models" activity but this is only for HL students. Spin is a difficult concept to understand. It can not be represented by + and - numbers since two spin 1/2 particles can form a spin 0 or spin 1 where as 1/2 + 1/2 always equals 1. Students might say that 1/2+ -1/2 = 0 but then one of the particles would have to have...