* Density is an intrinsic property: Density is defined as mass per unit volume (Density = Mass/Volume). It's a characteristic of the material itself, not its form.
* Copper is a homogeneous material: Copper is a pure element, meaning its composition is uniform throughout. This means every piece of copper will have the same density, regardless of its shape or size.
Think of it this way: If you had a block of copper and you melted it down and poured it into a mold to create a different shape, you'd still have the same amount of copper with the same mass. The volume might change, but the density (mass per unit volume) would remain constant.