Question

Different metals behave differently in their chemical reaction with water. Name a metal that reacts violently with cold water. Write its chemical equation also.

Answer 1

Solution

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Sodium and potassium metals react violently with cold water.

Observations :

1. Metal starts moving over the surface of the water making a hissing sound.

2. Metal starts reacting with water causing little explosion

3. Soon the metal catches fire and starts burning.

Reaction:

2K+2H

2

​

O→2KOH+H

2

​

2Na+2H

2

​

O→2NaOH+H

2

​

The gas evolved during the reaction can be identified bringing a burning candle near it. The candle burns with a pop sound indicating the evolution of hydrogen gas.

Step-by-step explanation:

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