When the water leaves the mixture, the mix becomes drier and harder until it is in solid form.
(the water; leaves; the mixture) (the mix; becomes; drier and harder; T:until it is in solid form; T:When the water leaves the mixture) (it; is; in solid form)
the water the mix it
leaves becomes is
the mixture
drier and harder T:until it is in solid form T:When the water leaves the mixture
in solid form