Which property below will be the best one to use to most accurately identify a pure substance because it is unique to each pure substance? hardness

brittleness

odor

density

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.

What is limiting reactant? with examples

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?