This is a measure of quantity of matter

Mass

Explanation:

Mass is the measure of amount of matter contained within any substance and hence mass determines the weight. Unit of mass is kilogram as per ISI system of units.

Mass is measured through a balance. The more is the mass of an object, the more the balance tilts towards the object side.

Weight is equal to product of mass and the gravitational constant i. e 9.8m/s^2