A chemical property gives a substance the ability to change its chemical composition in a reaction with other substances. Here's a breakdown:

* Chemical Property: Describes how a substance reacts with other substances.

* Chemical Change: A change that results in a new substance being formed.

Examples of Chemical Properties:

* Flammability: The ability to burn in the presence of oxygen. (e.g., Wood is flammable, water is not.)

* Reactivity: How readily a substance reacts with other substances. (e.g., Sodium is very reactive with water, gold is very unreactive.)

* Acidity/Basicity: The ability to donate or accept protons (hydrogen ions) in a reaction. (e.g., Lemon juice is acidic, baking soda is basic.)

* Oxidation: The ability to lose electrons in a chemical reaction. (e.g., Iron rusts when it oxidizes.)

* Corrosion: The ability to be broken down by chemical reaction with the environment. (e.g., Steel corrodes in the presence of moisture and air.)

Key Point: Chemical properties are only observed when a substance undergoes a chemical change. They don't describe the physical appearance or behavior of the substance.