Which property can be determined when matter undergoes a chemical change?

When matter undergoes a chemical change, it results in the formation of new substances with properties that are different from those of the original substances. This transformation is fundamentally related to the chemical reactivity and the nature of the molecules involved, which highlights the aspect of a chemical property.

Chemical properties describe how a substance interacts with other substances and change when a chemical reaction occurs. For example, when wood burns, it reacts with oxygen in the air to produce ash, carbon dioxide, and water vapor—new substances that have different properties from the wood itself. This transformation signifies a change in both the chemical identity and the reactivity of the matter involved during the process.

In contrast, the other options refer to different categories of properties that do not specifically pertain to the changes occurring during a chemical reaction. Physical properties are characteristics that can be observed without changing the substance's chemical identity, such as color, melting point, or boiling point. Mechanical properties relate to a material's behavior under applied forces, while quantitative properties involve measurable aspects, like mass or volume. While these properties can be influenced by physical states or changes, they do not capture the essence of what occurs during a chemical change.