Explain why rust should be prevented by referring to the effect on the economy.​

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

Answer///an early form of the atomic theory; dalton atomic theory;

Sorry im just trying to get answers like you are