Question

When sodium, a metal, is added to water, it reacts vigorously to form two new substances
sodium hydroxide and a colourless gas which extinguishes a lighted splint with a 'pop'
sound.
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Answer 1

$\huge{\mathbb{ANSWER : -}}$

When sodium, a metal, is added to water ,it reacts igorously to form two new substance _sodium hydroxide and a colourless gas which extinguishes a lighted splint with a 'pop' sound.!

Answer 2

The colourless gas which extinguishes with a pop sound is the hydrogen gas.