Final answer:
A chemical property of charcoal is its flammability, describing its ability to chemically react with oxygen when ignited. The correct answer is option: C. It is flammable.
Step-by-step explanation:
The statement that describes a chemical property of charcoal is that it is flammable. A chemical property is a characteristic of a substance that becomes evident during a chemical reaction and describes the ability of a substance to change into a different substance, often by interacting with other substances.
Examples of chemical properties include flammability, reactivity with water, and acid-base reactions. Flammability is a chemical property because it describes charcoal's ability to change chemically by combining with oxygen in the air when ignited.