Question

A characteristic that is used in the identification of solids and involves measuring mass and volume is _____.
1)luster
2)cleavage
3)toughness
4)density

Answer 1

4) density
density means degree of compactness of a substance

Answer 2

Answer: The correct option is (4).

Explanation:

Density of a substance is defined as measure of mass per unit volume.

• It is calculated by dividing given mass of the substance from its given volume, $density=\frac{\text{mass of the substance}}{\text{volume of the substance}}$.
• S.I unit of density is kilogram per meter cube ($Kg/m^3$).
• Higher the value of density, the more mass is concentrated in a unit volume of the substance. Substance will said to be denser.
• Lower the value of density, less mass is concentrated in a unit volume of the substance. Substance will said to be less denser.