Final answer:
Density is defined as the mass per unit volume of a substance, symbolized by the Greek letter rho, and calculated with the formula d = m / V. It is an intensive property used to determine whether substances will sink or float.
Step-by-step explanation:
Density Measurement
The density (d) of a substance is an intensive property, meaning it does not depend on the amount of substance. Density is calculated using the formula d = m / V, where m stands for mass, and V represents volume. The Greek letter rho (ρ) is commonly used as the symbol for density. This property is crucial for determining behaviors such as whether an object will sink or float in a fluid.
To find the density of a substance, you divide its mass by its volume. For example, to find the density of a cube, you calculate its volume by cubing its edge length and then divide its mass by this volume.