Which compound will conduct electricity when it is dissolved in water?

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

What happens to isotopes that are unstable?

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.