What are the three properties of matter and how is matter measured?

volume, weight, and mass

the solid has a mass of 180g. what is the density of the solid

What would the density be of a solid, if I had a mass of 180g?

To calculate the density of a solid, you need to know both the mass and the volume of the solid. Density is defined as mass divided by volume.

Given that you have the mass of the solid, which is 180g, but no information about the volume, it is not possible to determine the density. In order to calculate density, you would need to know the volume of the solid as well.