'A piece of chalk can be turned into a metal,'a student claimed. Comment this statement.
- 莫愁Lv 61 十年前最愛解答
Theoretically, it is feasible(可行的).
The main composition of chalk is calcium carbonate. Grinding(磨)it
and then heating the calcium carbonate powder strongly so that calcium
carbonate is decomposed into calcium oxide and carbon dioxide.
Heating up the calcium oxide at a very high temperature in
order to melt it down. The molten calcium oxide should then
undergo electrolysis. During this step pure calcium can then be formed.