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Answer:
A mixture is a combination of two or more different substances, which are not combined chemically and can be separated by physical means. Mixtures can be classified into various types based on the nature of the substances they contain and the way they are combined. Some common types of mixtures include:
1. Homogeneous mixture: In a homogeneous mixture, the components are uniformly distributed throughout the mixture, and it appears as a single substance. Examples include air, seawater, and sugar water.
2. Heterogeneous mixture: In a heterogeneous mixture, the components are not uniformly distributed, and the mixture appears as a mixture of different substances. Examples include sand and water, granite, and oil and water.
3. Solution: A solution is a homogeneous mixture composed of two or more substances, where one substance (the solute) is dissolved in another substance (the solvent). Examples include saltwater, sugar water, and alcohol mixed with water.
4. Suspension: A suspension is a heterogeneous mixture in which solid particles are dispersed throughout a liquid, and the mixture appears as a mixture of different substances. Examples include mud, ink, and sand in water.
5. Emulsion: An emulsion is a heterogeneous mixture of two or more immiscible liquids, where one liquid is dispersed in the form of small droplets throughout the other liquid. Examples include milk, mayonnaise, and oil and vinegar.
In summary, a mixture is a combination of two or more different substances that are not combined chemically and can be separated by physical means. Mixtures can be classified into various types based on the nature of the substances they contain and the way they are combined.