In this video we will get to learn about the chemical classification of matter.
- Chemical classification of matter divides the matter into two parts:
(i) Mixture and (ii) Pure substance
- Mixture: They contain two or more substances in any proportion. E.g. air is a mixture of different gases like Oxygen (O2), Nitrogen (N2), Carbon dioxide (CO2), water vapours etc.
- The mixture is of two types:
(i) Homogeneous mixture: The mixtures that have uniform composition throughout. eg. Air is a homogenous mixture of different gases.
(ii) Heterogeneous mixture: The mixture that does not have uniform composition. e.g. oil in water.
- Pure substance: They have a definite composition of their constituents. Eg. Glucose contains carbon (C), hydrogen (H) and oxygen (O) in fixed ratio and fixed composition.
Pure substances may be of two types:
(i) Element: It is a pure substance that contains only one kind of atoms. They cannot be broken down into simpler substances by any physical method. Eg.
(ii) Compound: When two or more atoms of different elements combine together they form a compound.
a) Examples of Element: Cu, Ag, Na, He
b) Examples of Molecule: H2, N2
c) Examples of Compound: NH3, H2O
d) Examples of Organic compound: CH4, C2H6
- Examples of Inorganic compounds: NH3, HCl
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