What is the difference between mass and weight in Physical Science?

Mass is a property of a lump of matter. It goes wherever the lump goes,

and it doesn't depend on what else may be nearby.

Weight is the force of gravity between a lump of matter and some other

mass. Since it depends on what else may be nearby, it can be different in

different places.

This is the correct answer in Physical Science. It's also the correct answer

in Biology, Math, Political Science, and Comparative Middle Eastern Religions.

Mass is how much matter is in an object

wieght is a body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.