Question

which is true of $100\\ \text{cm}^3$ of feathers and $100\\ \text{cm}^3$ of bricks?
please choose the reasoning for your answer:
the have the same density
they have the same mass
the feathers are less dense
the feathers are more dense
possible points: 2

Explanation:

Density is an intrinsic property of a substance, meaning it depends on the material itself, not the amount. Bricks are made of a dense material, while feathers are composed of lightweight, porous material. For the same volume ($100\ \text{cm}^3$), bricks have a much higher mass than feathers, so feathers have a lower density.

Answer:

The feathers are less dense