What is the term for the mass per unit volume of a substance?

What is the term for the mass per unit volume of a substance?

• A. Density
• B. Volume
• C. Mass
• D. Molarity

Answer: (A)

Density is the mass per unit volume. It tells you how much matter is packed into a given space. By definition, density equals mass divided by volume, often written as density = mass/volume, with common units like kg/m^3 or g/cm^3. Volume is the amount of space a substance occupies, mass is the amount of matter, and molarity is a solution property defined as moles of solute per liter of solution. For example, if you have 2 kilograms in 1 liter, the density is 2 kg per liter. This concept ties together how heavy something is with how much space it occupies, which is why density is the correct term.

Density is the mass per unit volume. It tells you how much matter is packed into a given space. By definition, density equals mass divided by volume, often written as density = mass/volume, with common units like kg/m^3 or g/cm^3. Volume is the amount of space a substance occupies, mass is the amount of matter, and molarity is a solution property defined as moles of solute per liter of solution. For example, if you have 2 kilograms in 1 liter, the density is 2 kg per liter. This concept ties together how heavy something is with how much space it occupies, which is why density is the correct term.