Question

The density of a substance is defined as _____.
1. Mass per unit volume
2. Product of mass and acceleration
3. Weight per unit volume
4. Thrust unit area

Answer 1

Correct Answer - Option 1 : Mass per unit volume

The correct answer is Mass per unit volume.

• Density is an important physical property for characterizing a material or chemical system.
• Mathematically, density is calculated as a substance's mass per the volume it occupies.
•  The formula for density is d = M/V, where d is density, M is mass, and V is volume.
  • Density is commonly expressed in units of grams per cubic centimetre (g/cm³).

• Water achieves its maximum density at 4ºC (39.2ºF).
• The natural density of milk is 1.200 times greater than normal water at 4ºC, i.e. the standard density of water 1 gm/cc.