Density

Definition:  

Density is the amount of  (mass) present per unit volume.It is a scalar quantity and depends on mass and volume to measure it. Its symbol is , a greek letter, rho.  It is typically measured in g/cm3 and its SI unit is kg/m3.

Explanation:

 If there is a wooden block, its density could be easily calculated by measuring its mass(in grams) in unit volume (in cm3 ). The diagram represents the mass present in   1cm 3 of wooden block. Density is a key concept that determines how much mass (stuff) is present in the unit volume of the given object.       

Analogy:

Imagine two school gyms:

Gym A (box A) starts with a few students. Gym B (box B) starts with more students, so it’s already denser. As more students come, both gyms get more crowded with students. This shows how packing more students into the same gym space is like increasing the density of objects or substances by adding more mass into the same volume.

Formula:

Density is a fundamental property of matter that explains matter present per unit volume. 

Mathematically, density (ρ) of an object  is defined as the ratio of mass (m) to  its volume (V), and the formula is given by:

= mV

This formula highlights that density measures how much mass is concentrated in a given volume. Objects with higher density have more mass per unit volume than objects with lower density.