Of copper is not active, why not for cooking utensils?
The soluble copper salt such as copper is toxic for oxidation of copper oxide, hydrochloric acid to produce soluble copper oxide and copper chloride in the stomach.
As a result of good thermal conductivity, suitable for cooking pot. Bronze - copper tin alloy, brass - copper zinc alloy.
Pure copper density, hardness, low wear, easy deformation, the price is expensive, so it is not suitable for cooking utensils
