Question

Which one of the following is not an intensive physical property of a pure liquid?

1) mass
2) boiling point
3) color
4) density

Answer 1

Color is not an intensive physical property of a pure liquid.Therefore the statement is 3) color is the correct option.

Step-by-step explanation:

Intensive properties are those that do not depend on the amount of substance present. Mass, boiling point, and density are examples of intensive properties, while color is an extensive property that can vary with the amount of substance. For instance, a larger quantity of a pure liquid may exhibit a darker or lighter color, but the color per unit mass or volume remains constant. Therefore, color does not fit the criteria of an intensive physical property.

In the context of pure liquids, mass is an intrinsic property that remains constant regardless of the quantity of the substance. Boiling point is the temperature at which a liquid changes into a gas under standard atmospheric pressure, and it is a characteristic property of the substance. Density, defined as mass per unit volume, is also an intensive property, as it remains constant regardless of the amount of the substance. In contrast, color is influenced by the quantity of the substance, making it an extensive property and not an intensive one in the context of pure liquids.

Answer 2

Color is not an intensive physical property of a pure liquid. Thus, the correct answer is 3) Color.

Step-by-step explanation:

Intensive properties of a substance are those that remain constant regardless of the amount of substance present. In the case of a pure liquid, intensive properties such as boiling point, density, and mass remain constant regardless of the quantity of the liquid. However, color is not an intensive property of a pure liquid.

Color is a qualitative property that can vary based on the nature of impurities present in the liquid or external factors but does not define the substance's identity or characteristics.

Boiling point is an intensive property that remains constant for a pure liquid at a specific pressure regardless of the amount of liquid present. It represents the temperature at which the vapor pressure of the liquid equals the external pressure, causing the liquid to change into a gas phase. Density, another intensive property, describes the mass per unit volume of the liquid and remains constant for a specific substance regardless of the quantity.

Mass, although not an intensive property, is a physical quantity that refers to the amount of matter in an object and can vary based on the quantity of the substance present. Unlike intensive properties, extensive properties like mass change with the amount of substance and are not independent of the quantity of the material.

Therefore, in the context of pure liquids, while mass can vary with the amount of liquid, boiling point, density, and color (as a qualitative property) are considered as intensive or non-intensive properties.

Thus, the correct answer is 3) Color.