Write balanced equations for the reaction of :

(i) Aluminum when heated in air. Write the name of the product.

(ii) Iron with steam. Name the product obtained.

(iii) Calcium with water. Why does calcium start floating in water?

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1 Answers

(i) 4Al + 3O2 → 2Al2O3, Aluminium oxide 

(ii) 3Fe + 4H2O → Fe3O4 + 4H2, Ferric oxide 

(iii) Ca + 2H2O → Ca(OH)2 + H2 because hydrogen sticks to calcium.

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