The time derivative of a function for this quantity for s particles depends on a function for this quantity for s-plus-one particles in the BBGKY hierarchy. The ratio of this quantity for two states is their Boltzmann factor. Microstates for which the (0[1])ergodic (0[1])hypothesis holds have equal values of this quantity. (0[1])The Born (0[1])rule gives that this quantity equals the square of the amplitude of the wavefunction. (20[2])Thus, (20[1])wavefunctions must be (*) normalized (10[1])to ensure that the integral (0[1])of this quantity with respect to space equals one. The shapes of atomic orbitals (10[2])represent regions where this quantity is positive (10[3])for a given electron. (10[3])For 10 points, (10[1]0[1])name this (0[1])quantity whose namesake “density” measures (10[1])the chance (10[1]0[1])of finding (10[2]0[1])a (10[1])particle (0[1])at a (10[1])given (10[1])location. (10[2])■END■ (10[3]0[6])