Syneresis refers to()A.the expansion ofa hydrocolloid impression material when it takes
Syneresis refers to()
A.the expansion ofa hydrocolloid impression material when it takes in water
B.the contraction of a hydrocolloid impression material when it exudes water
C.the fact that the sol and gel temperatures ofthe hydrocolloid differ
D.the inclusion ofpowder in a hydrocolloid impression material