Someone help me cuz im yk lol

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Compare and contrast physical changes with chemical changes.