Question

what catches fire when left in open..
guys plz ans

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Answer 1

Answer:

hope it helps

Explanation:

When sodium and potassium are kept in open they both will react violently with atmosphere gas and it will catches fire so that's y. this both metal are must kept in kerosene oil because they are highly reactive metal.

Answer 2

Answer:Sodium

Explanation:

Sodium is a very reactive metal.It reacts with oxygen to form Sodium Oxide.The reaction produces a lot of heat and it catches fire.It is,therefore, stored in kerosene.

Sodium and Potassium combine with oxygen to form their oxiden.

                            The reaction is so vigorous that it catches fire.

The hydrogen gas produced catches fire.