Surekha was very upset as her silver jewellary had turned black, and lost its lustre. Her father is a science teacher and he washed and cleaned the jewellary using toothpaste and brought the shine back. Why does the silver jewellary tarnishes when left open ?

Surekha was very upset as her silver jewellary had turned black, and l

1.	Surekha was very upset as her silver jewellary had turned black, and lost its lustre. Her father is a science teacher and he washed and cleaned the jewellary using toothpaste and brought the shine back. Why does the silver jewellary tarnishes when left open ?
Answer» Solution :SILVER jewellary reacts with gases and MOISTURE of air DUE to which it tarnishes and get CORRODED.