The density goes down.
As temperature goes up density goes down. As volume goes up density goes down. As mass goes up (or increases) density also increases, or in other words, it freezes.
The density of water changes at different temperatures. As temperature goes up, density goes down.
Density = Mass / Volume. So, if your volume stays the same, and there is a greater mass of air, then the density goes up.
If mass is constant, density goes down as volume, or quantity, goes up. In other words, if there is more of something (or it is bigger in size), and it has the same amount of matter, then it is less dense. This is because the atoms/molecules are spread out more.
Because density is the relationship between weight and volume. If you're just increasing volume, making the stuff fluffier, then for each unit of volume the weight will be less. Let's say you have a cup of cream. If you turn it into whipped cream it'll still weigh the same, but now it won't fit in the cup any more. More volume, same weight - lower density.
The volume of graphite is dependent on its mass and density. You can calculate it only if you know the sample's mass and density. The same goes for any other substance or object.
The FORCE, or Gravitational Pull of the Earth on an Object is DIRECTLY PROPORTIONAL to the Object's Mass. Force = Mass x Acceleration of Gravity So, if Mass goes up, Pull goes up, If the Mass goes down, the Pull goes down.
Mass = Density x Volume Density = Mass/Volume Volume = Mass/Density
Density = mass / volume So for your 'Liquid' it goes: Density = 10.0181 g / 6.75 cm3 = 1.48416 = 1.48 g/cm3
The more the mass the greater the density so they settle down
Density = Mass / Volume Rearranging this gives: Volume = Mass / Density Mass = Density × Volume