The mass number refers to the totaol number of can be found int he nucleus of the atom

Light waves can move through , but they travel fastest when they move through a(n) .

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)

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released