How is a mixture similar from a pure substance?

Answer 1

They are both compounds; They both have more than 2 atoms or substances

Answer 2

The question looks strange and weird,but this what i can say,a mixture can never be pure,a pure substance can never be a mixture,though we can talk about ,like,pure air or something,but that is not in the strict chemical sense.

Answer 3

Both mixtures and pure substances are made up of different types of matter. However, mixtures contain different substances mixed together physically, while pure substances are made up of only one type of substance.