Which of the following statements about ice melting is true?
a. water molecules move into a fixed position.
b. energy flows from the surroundings to the ice.
c. water molecules lose energy.
d. the temperature of the ice increases as it melts

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)