Properties of Metal and Non-Metal | Class 10 X CBSE Science

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Properties of Metal and Non-Metal | Class 10 X CBSE Science
Important topics as Properties of Metals and Non-Metals, Physical properties, Chemical properties, Malleability, Ductility and Conduction of Heat are described in this video.

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In this video of CBSE Class 10 X Science, we will learn the physical properties of metals and non-metals.

Elements are generally classified into metals and non-metals based on their properties.

Physical properties of metals and non-metals :

Malleability: This is the property of a substance due to which it can be beaten into thin sheets. Metals are generally malleable whereas non-metals are not.

Ductility: This is the property of a substance by which it can be drawn into thin wires. Metals are generally ductile whereas non-metal are not.

Conduction of heat: This is the property of a substance by which it conducts heat. Metals are generally good conductors of heat, silver and copper are the best conductors of heat while lead and mercury are the poor conductors of heat. Non-metals are bad conductor of heat

Conduction of electricity: This is the property of a substance that allows to flow of electrons through them and conduct electricity. Metals are generally good conductors of electricity while non-metal are bad conductors of electricity with an exception of graphite(an allotrope of carbon).

The appearance of surface: Metals, in their pure state, have a shining surface also called metallic luster. Non-metals are generally non-lustrous with an exception of iodine. Metals on reacting with gases in the atmosphere lose their shiny appearance when kept in air for a long time.

Hardness: Metals are generally hard with an exception of sodium and potassium that can be cut by a knife.

Density: Metals have high density except for sodium and potassium.

Melting and boiling point: Generally metals have high melting and boiling point except for sodium, potassium, mercury, cesium, gallium.

State at room temperature: Metals are generally solid at room temperature with an exception of mercury which is liquid. Non-metals are present in all three states, solid, liquid and gaseous, at room temperature.

Sonority: This is the property of a substance to produce sound when it is stroked. Metals are sonorous while non-metals are not.

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