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Mass is the amount of matter present in a body and is an intrinsic property of the body. Mass of an object remains the same always at any place. Weight is a measure of how strongly gravity pulls on that matter. The SI unit of Mass is Kilogram. Mass is measured using a pan balance. The SI unit of Weight is Newton. Weight is measured using a spring balance, which is a vector quantity. Mass is always a constant at any place and any time, which is a scalar quantity.

20:49, 5 May 2011