Question

Hydrogen is combustion, oxygen helps combustion, but water helps to extinguish fire

Answer 1

It is so because water is a compound of oxygen and hydrogen. A compound is a chemical combination of 2 or more elements and it does not show the properties of its constituents. Hence, water being a compound does not show the properties of hydrogen and oxygen. Instead, it extinguishes fire.

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Answer 2

$<b>Hey friend !</b>$

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This is bcoz -

◾ Properties of elements change when they form compounds .

◾ So , after compound formation , the property of individual Hydrogen and individual Oxygen changes after they form Water ( H$²$O )

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From everyone's frnd ,
Brishti