We study the spin-mixing dynamics of an f = 1 spinor condensate. We show th
at the dynamics is sensitive to the relative phase and particle number dist
ribution among the individual components of the condensate, and find that c
omplex structures can develop in the density profiles during the time evolu
tion. We investigate the different time scales of the spin-mixing process a
nd their dependence on the total particle number. [S1050-2947(99)01308-6].