Which mixture is classified as a solution?
a. blood
b. cement
c. salt water
d. muddy water

What are the major types of a chemical compound

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?

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)