Question

which of the following are extensive properties? length density freezing point melting point

Explanation:

An extensive property depends on the amount of matter. Length depends on the quantity of the object (more object means more length). Density (\(d=\frac{m}{V}\)) is intensive (ratio of mass and volume, doesn't depend on amount). Freezing and melting points are characteristic (intensive) properties of a substance, not depending on the amount.

Answer:

Length.