Density is another property of matter
Yes, that's correct.
Density is a physical property of matter that relates the mass of an object to its volume. The density of a substance can be found by dividing its mass by its volume, often expressed in units such as kilograms per cubic meter (kg/m^3) or grams per cubic centimeter (g/cm^3). The formula to calculate density is:
Density (ρ) = Mass (m) / Volume (V)
Density is an important property because it determines whether an object will float or sink in a fluid. For example, if an object is denser than the fluid in which it is placed, it will sink. If it is less dense, it will float.
Different materials have different densities, making this property useful in identifying and characterizing substances. For instance, most metals are dense, whereas gases are less dense. Water has a density of 1 g/cm^3 at 4°C (39°F), which is a commonly used reference point.
Because temperature and pressure can affect both mass and volume, density can vary with changing conditions. For example, heating a substance typically causes it to expand, increasing its volume and decreasing its density. Similarly, compressing a substance can increase its density by reducing its volume.
Knowing the density of materials is useful in a variety of scientific and engineering applications, from material selection in construction to understanding the buoyancy of objects in fluids.