Density is a physical property. In chemistry, matter has composition and properties. However, these properties can be either physical or chemical, and a physical property is any property that is either observable or measurable without having to change the matter’s composition.
Physical properties can be either intensive or extensive. Density, conductivity and color are examples of intensive physical properties. Extensive physical properties are length and mass.
Matter also can undergo physical changes, but its composition remains the same. The different phases of water are examples of physical changes.
Chemical properties are characteristics that can be measured by changing a substance’s molecular structure or composition. Some chemical properties of substances are the reaction of alkali metals with water and heat combustion.