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CBSE Video lectures for download

     

=Substance and Type of Substances

=Mixture, Homogeneous Mixtures, Heterogeneous mixtures

=Solution, Properties of Solution

=Suspension, Properties of Suspension

=Colloid, Properties of Colloid

=Tyndall Effect

=Method of Separating the Component of Mixture

=obtain the coloured component (dye) from a ink

=Use of separating funnel

=Sublimation

=Centrifugation

=Chromatography

=Method of Simple Distillation

=Method of Fractional Distillation

=Obtain Different Gases from Air

=Crystallisation, Application of Crystallisation

=Physical Change

=Chemical Change

=Diagram of water purification system

=Differentiate between mixtures and compounds.

=Classification table of matter.

 

What is a mixture? Name the types of mixtures? What is the difference between them?"

What is a mixture? Name the types of mixtures? What is the difference between them?
Answer: A mixture is a combination of two or more substances (elements or compounds) which is not done chemically.
Mixtures are two types Homogeneous Mixtures and Heterogeneous mixtures.
Homogeneous Mixtures: A Homogeneous mixture has a uniform composition of its components throughout its mass. It does not have visible boundaries of separation between the various components. For example a sugar solution or a salt solution.
Heterogeneous Mixtures: A Heterogeneous mixtures does not have a uniform composition throughout its mass also it has visible boundaries of separation between various components. For example mixture of sand and water.


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