A fellow student does not understand why air is a mixture. Write a brief explanation about why air is a mixture, whether it is homogeneous or heterogeneous, and how it can be separated.

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anonymous · Answer

First, let's talk about what a mixture is. `Mixture: a substance made by mixing other substances together` Hmm, okay. That sort of helps if we know what a substance is. `Substance: a particular kind of matter with uniform properties` What are the states of matter? The three most basic states are solid, liquid, and gas. Okay! Knowing this, we can see that the a mixture is basically the mixing of matter. What is air? Air contains different gases: CO2, N, H2O, etc. Therefore, air is considered a mixture. Air can be separated, but the process can be complicated. I recommend visiting here for more information: https://en.wikipedia.org/wiki/Air_separation