20mm Copper Density Cube with Element Stamp

This solid copper density cube measures 20mm (0.78") on each side and is stamped with the element symbol (Cu) for easy identification. The cube is designed for educational use in density investigation, specific heat, and specific gravity experiments. Copper's well-established physical properties make it a useful reference material for physics and chemistry instruction across all grade levels. Designed for educational settings with tolerances in the +/- 5% range. Some oxidation may occur due to the nature of raw metals and can be removed by scuffing.