HELP PLEASE The production of a
is evidence that a chemical reaction has occured. This occurs when a solid is formed by the reaction.

How are isotopes of the same chemical element alike? how are they different?

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.

Which statement are accurate about snow flakes