Mercury and gold are both metals. Unlike gold, mercury cannot be used to make jewelry because it is a liquid at room temperature. The difference in the state of matter of the two metals is an example of an ? property. answers:
chemical
electrical
nuclear
physical

physical property

Explanation:

all those property which reverse on temperature change are physical propertys

eg:- as soon as the temp. dec. below room temp. mercury changes its state to solid

a) the particles of the chair are strongly held together.

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