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In a chemical laboratory , a student br...

In a chemical laboratory , a student broke the thermometer while performing an experiment . Immediately , the mercury which was spilled over was removed by the lab - incharge by sprinkling sulphur on it . The teacher asked the students to predict the type of change / reaction associated with the above process. Explain with apporpriate reasons.

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When mercury gets spilled on the floor or any surface , it can be collected by sprinkling sulphur powder because Hg reacts with S to form HgS.
`Hg+StoHgS`
It is element - element combination that is synthesis reaction.
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