# Density = Mass / Volume

## Density = Mass / Volume

• Density is a fundamental property of matter, defined as the amount of mass in a unit volume of a substance.

• To calculate density, you use the formula: Density = Mass/Volume.

• Mass refers to the amount of matter in an object, typically measured in kilogrammes (kg).

• Volume refers to the amount of space that an object occupies, usually measured in cubic metres (m^3) or cubic centimetres (cm^3).

• If an object has a higher density than a fluid, it will sink in that fluid. If an object has a lower density than a fluid, it will float.

• Changing the temperature of a substance can change its density. Generally, as temperature increases, volume also increases and therefore density decreases.

• Pressure can also affect the density of gases. Increasing pressure raises the density as it decreases the volume.

• Density is important in understanding fluid dynamics and buoyancy, the principle that explains why some objects float while others sink.

• The denser an object is, the less likely it is to float.

• In terms of energy, density plays a significant role in conduction and convection currents. High-density materials usually conduct heat better than low-density ones.