R kiran kumar R kiran kumar

Syed touhidSyed touhid

Shivaraju Shivaraju

Mahamad iliyasMahamad iliyas

Naveena kumar Naveena kumar

• “Any thing which has mass and can occupy space is called matter”. we also know that matter can be classified into solid. Liquid and gas. This classification is based on the differences in physical properties of the matter.

1.A solid has a definite mass. Volume and shape.

2.In a solid the particles are densely packed. The solids are hard and rigid.

3.The constituent particles are vibrating very minutely and are invisible

4.On heating the vibrating the vibration of particles I n c r e s e s and the s u b s t a n c e expands.

1.A liquid has no fixed shape.1.A liquid has no fixed shape.2.It has a fixed volume and mass.2.It has a fixed volume and mass.3.L I q u I d assumes the shape of the 3.L I q u I d assumes the shape of the

container.container.4.The particles in a liquid are not as 4.The particles in a liquid are not as

densly packed as they are vin solids.densly packed as they are vin solids.5.Liquids can flow easily 5.Liquids can flow easily

1.A gas has fixed mass but not fixed shape or volume.

2.The volume of gas depends on the size of the container.

3.And the speed of the particles increase on heating`

Chemically matter can be Chemically matter can be classified as pure substances classified as pure substances

and mixtures. Pure and mixtures. Pure substances are either substances are either

elements or compounds. elements or compounds. Mixtures are either Mixtures are either homogeneous or homogeneous or heterogeneous.heterogeneous.

1.Are homogeneous.1.Are homogeneous.

2.Consist of similar 2.Consist of similar

3.Have specific properties 3.Have specific properties

• Cannot be divided into two or more Cannot be divided into two or more simple substances chemically.simple substances chemically.

• Cannot be synthesized by the Cannot be synthesized by the chemical combination of other chemical combination of other element.element.

•Combination of two or more Combination of two or more substances.substances.

•The constituents may be in any The constituents may be in any proportionproportion

•Constituents retain their original Constituents retain their original properties.properties.

•Can be divided into its Can be divided into its constituent elements by constituent elements by chemical methods. properties of chemical methods. properties of compound are different from that compound are different from that of the constituent elements.of the constituent elements.

•Are obtained by the chemical Are obtained by the chemical combination of two or more combination of two or more elements elements