Question

silvery white metal X is in the form of ribbons. Upon ignition, it burns with a dazzling

white flame to form white powder Y. When water is added to the powder Y, it partially

dissolves to form a substance Z which is used as an antacid. Identify X,Y and Z and write all

the chemical reactions that are taking place​

Answer 1

hope it helps you ❤️....

Answer 2

Metal X is Magnesium (Mg)

upon ignition, Magnesium burns to form a white powder which is Magnesium oxide

2Mg+O2→2MgO

Powder Y is Magnesium oxide

When water is added to Magnesium oxide, it forms Magnesium hydroxide Mg(OH)2 which is used as an antacid to relieve indigestion

Substance Z is Magnesium hydroxide.

MgO + H2O → Mg(OH)2