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write chemical properties of metal and nonmetal

Posted by Jagruti Jagruti 5 years, 10 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 10 months ago

Chemical Properties of Metals:

Reaction of Metals with Oxygen: Almost all metals react with oxygen to form metal oxides.

Metal + Oxygen → Metal oxide

Sodium and potassium are the most reactive and react with oxygen present in the air at room temperature to form the oxides.

Reaction of Metals with Water: Metals react with water to produce metal oxides with the release of hydrogen gas. But all metals do not react with water.

Metal + Water → Metal oxide + Hydrogen

Metal oxides that are soluble in water dissolve in it to further form metal hydroxide.

Metal oxide + Water → Metal hydroxide

Metals such as sodium and potassium react vigorously with cold water to lead to evolution of hydrogen, which immediately catches fire producing a large quantity of heat.

Reactions of Metals with Acids: Metals react with acids to form salt and hydrogen gas.

Metal + Dilute acid → Salt + Hydrogen

Metals react with dilute hydrochloric acid to give metal chloride and hydrogen gas. Example - Magnesium reacts violently with dilute hydrochloric acid to form magnesium chloride and hydrogen.

iv. Metals react with Solutions of other Metal Salts:

A more reactive metal displaces a less reactive metal from its salt solution. For example: When an iron nail is placed in a copper sulphate solution, the blue colour of CuSO4 fades away slowly and a reddish brown copper metal is formed.

CuSO_4(aq) + Fe_(s) → FeSO_4(aq) + Cu_(s)

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CBSE > Class 10 > Science