In general
when there is a displacement reaction the following reaction take
place:
–Metal 1 + Metal 2 salt solution ¾® Metal 1 salt solution + Metal 2
You tested
four metals again with solution of salts of the other three metals.
Magnesium
was able to displace all the other metals from their salt solution.
Word equation:
Magnesium + Zinc sulfate ¾® Magnesium
sulfate + Zinc
(Chemical) equation: Mg(s) + ZnSO4 (aq) ¾® MgSO4 (aq) + Zn
Ionic equation:
Mg(s) + Zn2+ (aq) ® Mg2+ (aq) + Zn(s)
You must be
able to write equations for the rest of the displacement reactions
you observed.