Question

5.Some metals react with water.

a) Write two examples of metals that react with cold water.

b) Which gas is liberated on reacting metals with water .

c) Write the name of a metal that reacts with steam​

Answer 1

Answer:

Hydrogen

Metals that react with steam form oxides. Hydrogen is always produced when a metal reacts with cold water or steam.

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Reactivity series of metals.

Order of reactivity Metal Reactions with water or steam

Third most reactive calcium (Ca) less vigorous reaction with cold water

answer (a)

Answer 2

Answer:

1. 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.
2. Metals react with water and produce a metal oxide and hydrogen gas.
3. Aluminium(Al), Iron (Fe) and Zinc (Zn) react with steam/ vapour to form metal oxide and hydrogen. Metals such as potassium (K) and Sodium (Na) reacts with cold water.

Explanation:

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