Early coppersmiths in Iran found that heating copper softened it and hammering copper made it harder. In this way, they could shape copper into various useful items such as containers and utensils, a big leap forward for the human race. Because of its beautiful colour, copper was also made into jewellery and ornaments. Around 4000 BC bronze, an even harder alloy, was discovered by mixing copper with a small amount of tin. Copper is soft but tough.
Copper is quite rare.
Heat conducting Copper s ability to conduct heat means it is used for car radiators, air conditioners, home heating systems, and boilers to produce steam. It is also ideal for the base of cooking pots. Fungicides and insecticides Copper sulphate is used to kill algal blooms in water reservoirs, to protect timber, to stop plant roots from blocking rains and sewerage systems, and to kill insects. Health Copper is an important trace mineral for the healthy functioning of the body. Some people find that wearing a copper bracelet helps relieve arthritis.