When I think of science, I think of factual evidence from the use of experimentation.
Science is hypothesizing research in order to confirm if the experimentations are true or not.
Aluminum and copper because all of them have advantages and disadvantages over iron alloys.
When rocks returns to the Earth's mantle, they can eventually melt and become magma. Heat and Pressure are the main factors that controls this change
The oxidation number of oxygen in the carbonate ion found in malachite would be -2.
In the reactants Sb has oxidatin number 0 (because it is in its elemental form)
In the products Sb has oxidaton number +3.
Then Sb lost electrons which means it oxidized.