Yes, a reaction of a substance with water is indeed an example of a property, specifically a chemical property. Chemical properties describe how a substance interacts with other substances and change during these interactions.
When a substance reacts with water, it may undergo a transformation that results in the formation of new substances. For instance, when sodium reacts with water, it produces sodium hydroxide and hydrogen gas, which is a clear indication of its reactivity and demonstrates a chemical property of sodium.
This type of property is essential for understanding the behavior of substances, especially in various chemical reactions. Unlike physical properties, which can change without altering the substance’s chemical composition (like melting point or color), chemical properties are revealed only when a chemical reaction occurs.