Is concrete a heterongeneous or homogeneous mixture?
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http://www.usoe.k12.ut.us/curr/Science/sciber00/8th/matter/sciber/matter.htm
Concrete is a heterogeneous mixture. It is composed of different materials such as cement, water, aggregate (such as sand and gravel), and various additives. These components are not uniformly distributed throughout the mixture, making it heterogeneous.
Concrete is considered a heterogeneous mixture. This means that its composition is not uniform throughout, and you can see different components or phases within the mixture. The main components of concrete are cement, sand, gravel, and water, which all have different properties and can be visually distinguished.
To determine whether a substance is a heterogeneous or homogeneous mixture, you can observe its appearance and look for any visible differences or variations in composition. If you see distinct phases or components, like in the case of concrete, then it is a heterogeneous mixture. On the other hand, if the substance appears uniform throughout and has a consistent composition, it is considered a homogeneous mixture.