yuk yip 發問於 科學及數學化學 · 1 十年前

About chemistry

'A piece of chalk can be turned into a metal,'a student claimed. Comment this statement.


1 個解答

  • 莫愁
    Lv 6
    1 十年前

    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.