Question

A silvery white metal X, taken in the form of ribbon on burning in air

forms a white powder Y. When water is added to powder Y, it dissolves
partially to form another substance Z.


a) Identify X, Y and Z.


b) What is the nature of substance Z?


c) Write all the relevant suitable chemical equations.​

Answer 1

Answer:

A) The metal X is Magnesium

The white powder Y is Magnesium Oxide

The substance Z is Magnesium Hydroxide

B) The nature of Z is Basic

C) 1) Mg + O2 ―–――» MgO

2) MgO + H2O ―–――» Mg(OH) + H2