Mixture Class 9 Chemistry In Urdu By Haider Ali | Homogeneous And Heterogeneous Mixture, Lec#5, Ch#1

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A mixture is a substance which consist of two or more elements or compounds not chemically combined together. For Example Air is a mixture of gases like oxygen,nitrogen,argon,carbon dioxide etc. ... The various substance present in a mixture are called as its constituents or components.
A mixture in which various constituents are mixed uniformly is called homogeneous mixture. Example: Air, Alloy, Solution of salt in water. Heterogeneous mixture. A mixture that is not uniform throughout is called a heterogeneous mixture. Example: A mixture of sugar and salt is a heterogeneous mixture.