give properties of solution, substances and collide.
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What is a solution?
Solutions are a homogeneous mixture of two or more substances. It has homogeneity at the particle level. Usually, people think of it as some liquid with either a solid or a liquid or a gas dissolved in it. However, this is not entirely true. We can also have solid solutions like alloys. For example:
- Air: It is a mixture of gas in gas. Air is a homogeneous mixture of a number of gases. The two main constituents of gases are oxygen (21%) and Nitrogen (78%)
- Alloys: Alloys are homogeneous mixtures of metals. They cannot be separated into their individual components by physical methods. Irrespective of that, an alloy is considered as a mixture. It is because an alloy shows the properties of its constituents and can have variable composition. For example, brass is a mixture of 30% zinc and 70% copper
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Collide is a heterogeneous mixture of a dispersed phase and a dispersion medium but due to small particle size, it appears as a homogeneous mixture to the naked eye. The particle size varies from 1 to 100 nm (nano meters).
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