What is true about kilogram of feathers and bricks?

A kilogram of feathers and a kilogram of bricks weigh the same. This is because a kilogram is a unit of mass, and mass is a measure of the amount of matter in an object. The density of an object, which is its mass per unit volume, does not affect its weight. This means that a kilogram of feathers and a kilogram of bricks will both weigh the same, even though the feathers take up more volume.