Is granite homogeneous or heterogeneous?
In heterogeneous mixtures, the components are easy to see. For example, most rocks have a mix of different minerals inside them. Granite is a heterogeneous mixture because it contains minerals that you can easily tell apart (each colour is from a different mineral).
Granite may look homogeneous from a distance, but upon closer examination, its minerals can be identified and separated. Therefore, granite is classified as a heterogeneous mixture.
By contrast, a mixture that is uniform in the composition is a homogenous mixture. With the naked eye, you cannot differentiate between each component in a homogeneous mixture because they have a uniform composition. However, homogeneous mixtures have evenly distributed components. For example seawater, oxygen, vinegar or air.
Water is an example of a homogeneous mixture because it does not have visible chunks or particles floating in it. Each chemical substance that exists has the same composition everywhere
Although steel is a homogeneous mixture, it contains iron and carbon. A pure substance only has one component, which makes it different from a homogeneous mixture that can have more than one component. It has a homogeneous look. It has unique properties that distinguish it from others, for example, its density.
Granite can be classified as a heterogeneous mixture because, though it appears homogeneous at first glance, if you take a closer look you can see that its minerals are quite different from each other.
Though all rocks contain some form of heterogeneity, granite is one of the most easily identifiable types due to its unique mix of colours. Heterogeneous mixtures are generally easy to distinguish from homogenous ones, which have an evenly distributed composition.
Steel, on the other hand, is an example of a homogeneous mixture as it has a uniform composition and cannot be separated into its components. It also has unique properties that differentiate it from other substances.
It is important to understand the difference between homogeneous and heterogeneous mixtures to properly classify and study materials.