How do metals react with cold and hot water? Explain with examples.
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Metals react with water according to the activity series of metals. The highly reactive metals like potassium, sodium and calcium react vigorously with water to form a base and evolve hydrogen gas. The elements below in the series, such as aluminium, zinc and iron usually react with only hot water but prevent further reaction by forming a coating of their oxide on the surface. The metals further down like gold and silver do not react at all with water.
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all metals don't react with water but some metals like potassium and sodium react violently with cold water and when those evolved with hydrogen they catches fire
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