Question

Define mixture ( Grade 9, NCERT )

Answer 1

༶•┈┈⛧┈♛In chemistry, a mixture is a material made up of two or more different substances which are not chemically combined. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

Answer 2

Define a mixture

A mixture is one which contains two or more different kinds of particles ( atoms & molecules )., i.e. a mixture contains two or more pure substances mixed together. For eg: salt solution is a mixture of two pure substances: salt & water. milk is a mixture of water, fat & proteins. All the mixtures are impure substances because they contain more than one kind of particles. Some other examples are sea water, LPG, tap water, tea, coffee, etc. A mixture may be homogenous or heterogenous. A mixture can be separated into other kinds of matter by physical processes. A mixture does not have a fixed composition or a fixed melting point and boiling point. Most of the matter around us exists as mixtures of two or more pure substances.

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