When two substances A and B are powdered together in a pestle and mortar, a large amount of heat is released and a new substance C is formed. What is the nature of the new substance?

Compound

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Mixture

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Element

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None of the above

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Solution

The correct option is A Compound
When two substances A and B are powdered together in a pestle and mortar, a large amount of heat is released and a new substance C is formed. During the formation of a compound, heat is either required or released. For mixtures that heat is neither released nor absorbed, the elements are of the purest form. Since heat is released here, substance C is a compound

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