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

* Chemical Properties: These describe how a substance reacts with other substances or how it changes its composition under certain conditions. Examples include flammability, reactivity with acids, and oxidation.

Absorbency is the ability of a material to take in and hold a liquid. This process doesn't involve a chemical change in the material itself. The liquid is simply being absorbed into the material's pores or spaces.

Example: A sponge absorbs water, but the sponge's chemical composition doesn't change. It's just physically holding the water within its structure.