* Physical Properties: These are characteristics that can be observed or measured without changing the chemical composition of a substance. Examples include color, texture, state of matter, melting point, and density.

* Chemical Properties: These describe how a substance reacts with other substances or changes its chemical composition. Examples include flammability, reactivity with water, and the ability to form compounds.

Since the description "white waxy solid" only describes the appearance and texture of phosphorus, it's a physical property. It doesn't tell us how phosphorus will react or behave chemically.