Does change the amount of one substance affect the mixture’s identity

no, it does not. At least, I believe, but i'm sure it doesn't.

alfred von schlieffen, german army chief of staff, was given instructions to devise a strategy that would be able to counter a joint attack. in december, 1905, he began circulating what later became known as the schlieffen plan. schlieffen argued that if war took place it was vital that france was speedily defeated.