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In this Chemistry video in Hindi for Class 10 we explained one of the chemical properties of metals. We discussed on how metals react with water. Reacting with water metals produce metallic oxides and hydrogen gas. If those metallic oxides are soluble in water, they further react with water to produce metallic hydroxide.
Metals like potassium and sodium react violently with cold water. In case of sodium and potassium, the reaction is so violent and exothermic that the evolved hydrogen immediately catches fire.
The reaction of calcium with water is less violent. The heat evolved is not sufficient for the hydrogen to catch fire.
Magnesium does not react with cold water. It reacts with hot water to form magnesium hydroxide and hydrogen.
Metals like aluminium, iron and zinc do not react either with cold or hot water. But they react with steam to form the metal oxide and hydrogen.
Metals such as lead, copper, silver and gold do not react with water at all.
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🔴 Click here to watch the whole playlist on Chapter 3 : 'Metals and Non-Metals' for Class 10 :
• Physical Properties of...
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