Question

what is the action of water with calcium? why does calcium metal start floting in the water? write any two uses of washing soda and plaster of Paris ​

Answer 1

Reaction of calcium with water:-

Calcium is a high reactive metal .It reacts with water to form Calcium hydroxide and hydrogen.It is more reactive than hydrogen that's why ,it displaces hydrogen.the process is exothermic(heat realeasing).the reaction will be as follows:-

Ca + 2H2O => Ca(OH)2 + H2

Calcium starts floating on water :-

when calcium reacts with water it starts floating because it is a high reactive metal and readily reacts with water .when it reacts it forms bubbles so it float on water.

Uses of baking soda:-

#it is used in making baking powder

#it is a making ingredients of food materials

#it is used in making soda acid fire extinguishers

Uses of plaster of Paris:

#it is used in making decorative .materials,statues or toys

#it is used in healing apparatus in chemistry labs

#it is used in surgery in hospitals

hope it helps## you mate