Solution:
(a) Gold and platinum are mostly found in the free state in nature.
(b) Sodium and Magnesium are almost always found together.
(c) Iron (III) oxide; haematite ore contains Fe2O3.
(a) Name two metals that are found in nature mainly in the free state (as metallic elements). (b) Name two metals that are always found in a combined state. (c) What iron compound is present in hematite ore? Also, write its chemical formula.
(a) Name two metals that are found in nature mainly in the free state (as metallic elements). (b) Name two metals that are always found in a combined state. (c) What iron compound is present in hematite ore? Also, write its chemical formula.