What are two sentences about the relationship about among mass voiume and density?

Mass is the weight of an object/liquid/gas. Volume is the amount of space it occupies (although it does not need to completely "fill up" the container it is in, such as a gas that has particles that are not touching side by side like a solid). Density is the relationship between mass and volume. The formula is D=m/v or Density=Mass (divided by) Volume. It determines how solid something is (for example, a gas would not be considered very dense because it's particles are so far apart).