Is soil considered a homogeneous or heterogeneous mixture?
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My homeschooling niece has to experiment with mixtures. She’s supposed to separate sand and salt, and we’re supposed to help her, but we don’t know how lol How do you separate sand and salt?
Just remembered my high school class where we made various solutions to learn about mixtures and randomly thought of air. I know that there are many things in air aside from oxygen, and thought of this – is air a ...