Which of the following is an example of an extensive property of a substance?

An extensive property is a characteristic of a substance that depends on the amount of material present. Mass is a prime example of this type of property because it directly scales with the quantity of the substance. For instance, if you double the amount of a substance, you will also double its mass.

In contrast, other properties mentioned, such as color, boiling point, and freezing point, do not change with the amount of substance. These are known as intensive properties. Intensive properties remain constant regardless of the amount of material. Therefore, among the options provided, mass is uniquely dependent on the size of the sample, making it an extensive property.