SSC MTS EXAM

SSC

CHEMISTRY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Physical or chemical change?A solid is crushed into a powder?

A	physical change
B	chemical change
C	Either A or B
D	None of the above

Explanation:

Detailed explanation-1: -(h) Rock is crushed into powder. Physical, it s still rock with the same chemical identity just divided into smaller particles.

Detailed explanation-2: -Cutting paper into tiny pieces or crushing a rock are obvious physical changes but to restore the original piece of paper or rock is difficult.

Detailed explanation-3: -A process like grinding some salt crystals into a fine powder does not involve the breaking of chemical bonds and the formation of new ones, so it is a physical change.

Detailed explanation-4: -Answer and Explanation: Crushing is a physical property. Physical properties are those that can be measure without changing the chemical composition of the substance being studied.

There is 1 question to complete.