Question

help needed


1.why calcium floats on water
2. what happened when zinc react with copper sulphate solution.
3 define Minerals and Ores
4. explain extraction of copper

Answer 1

◆ 1) Calcium floats on water because it has low density than the density of water.

◆ 2) Zn + CuSO4 (sol.) --------> ZnSO4 + Cu

So, when zinc reacts with copper sulphate solution, Zinc sulphate [ZnSO4] is formed along with Copper [Cu].

3) ● A mineral is an inorganic substance with definite physical and chemical properties of its own.
● A naturally occurring solid material from which a metal or valuable mineral can be extracted profitably is called ore.

4) Extraction of copper :-
Copper can be extracted from its ore chalcopyrite