Metals. General properties. Extraction and classification of metals
Most of the metals combined with rock when molten, to form metallic ores. . Some, like copper and lead for example, can be used in their pure state, to take.
Copper is a chemical element with symbol Cu (from Latin: cuprum) and atomic number 29. . Copper is essential to all living organisms as a trace dietary mineral because it is a key constituent of .. If there is not sufficient information to establish EARs and RDAs, an estimate designated Adequate Intake (AI) is used instead.Get Price