What are metals? Give any two examples.
Metals are elements which form electropositive ions by losing electrons.
For eg. Iron, copper, gold, etc.
Write the chief ores of the following metals.
a. Iron: Haematite (Fe2O3)
b. Aluminium: Bauxite (Al2O3 . 2H2O)
c. Copper: Copper phyrite "chalcopyrite" (CuFeS2)
d. Silver: Argentite (Ag2S)
e. Gold: Alluvial sand/soil