Introduction to Density

Density Definition and Formula

• Density is defined as mass per unit volume.
• Formula: \rho = \frac{m}{V}, where:
  • \rho represents density.
  • m represents mass.
  • V represents volume.

Units of Density

• The SI unit of density is kilograms per cubic meter (kg/m^3).
• Density may also be given in grams per cubic centimeter (g/cm^3).

Understanding Density vs. Weight

• It's crucial to understand the difference between density and weight.
• Example: Lead is denser than water, but whether a sample of lead is heavier than a sample of water depends on the amount of each substance.
• Density refers to how much mass is packed into a given volume.

Quick Conversion of Density Units

• To convert from grams per cubic centimeter (g/cm^3) to kilograms per cubic meter (kg/m^3), multiply by 1000.
• To convert from kilograms per cubic meter (kg/m^3) to grams per cubic centimeter (g/cm^3), divide by 1000.