Question

using the terms mks system, fundamental units , derived units, area, volume, density, scientific notation and significant figures to explain how your mass is different from your weight

Answer 1

Who asked you such a question?

Answer 2

W=mg is actually weight and it shows relation between mass(m)
But in popular situation people just say mass instead of weight and against in scientific society W=mg is selected for weight.g=gravity acceleration and related to location.but in Earth it's around 10 m/s2

Answer 3

Your mass is different from your weight because even when you are weightless you resist acceleration -- you have inertia.