Check sibling questions

Write equations for the reactions of

(ii) calcium and potassium with water



(ii) Calcium and Potassium with water



Calcium reacts with cold water to form Calcium Hydroxide and Hydrogen gas .

  • Heat formed in this reaction is less violent and does not produce sufficient heat for hydrogen gas to catch fire.
  • The piece of Calcium metal floats in water , because bubbles of hydrogen gas formed in the reaction, stick to the surface.



Potassium reacts violently with cold water to form Potassium Hydroxide , Hydrogen Gas and heat energy. 

The reaction is very exothermic and produces large amounts of heat.

Get live Maths 1-on-1 Classs - Class 6 to 12

Ask a doubt
Maninder Singh's photo - Co-founder, Teachoo

Made by

Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo