Answer:
Calcium chloride react with aluminum to produce calcium and aluminum chloride. This reaction takes place at a temperature of 600-700°C.
CaCl2+F2 -> CaF2 + Cl2
the bond in a molecule of Cl2 is a covalent bond
Because of making the equestion to be more stable and form the best compound according to it's reactant.
That would be an endothermic reaction! :)
