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AT ST or NT? A ure substance has varying composition

User Prespic
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Final answer:

A substance with varying composition is considered a mixture. It can be either a homogeneous or heterogeneous mixture, depending on its uniformity or lack thereof. For example, air is a homogeneous mixture of gases.

Step-by-step explanation:

A substance with varying composition is considered a mixture. In chemistry, there are two types of mixtures: homogeneous and heterogeneous. A homogeneous mixture has uniform composition throughout, like a solution, while a heterogeneous mixture has different regions with different compositions, like a salad dressing.



For example, air is a mixture of gases including nitrogen, oxygen, and carbon dioxide. It has a varying composition, but it is still considered a homogeneous mixture because it appears the same throughout.

User Joe Gayetty
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