Arrange the following metals in decreasing order of reactivity.

Zn, Cu, Fe, Al

Describe the colors of the following solutions:

(i) Copper Sulphate

(ii) Ferrous Sulphate

(iii) Zinc Sulphate

(iv) Aluminum Sulphate

Describe the colors of the following metals:

(i) Zinc (Zn)

(ii) Iron (Fe)

(iii) Copper (Cu)

(iv) Aluminum (Al)

What materials will you use for comparing the reactivities of Aluminium and Iron? Give a reaction.

What is a salt? Give names of salts that you use in day-to-day life.