Chemistry

Science (CSC) Combined State Civil Services

Title

45:30

Video Progress

8 of 24 completed

Notes Progress

5 of 15 completed

MCQs Progress

38 of 100 completed

Subjective Progress

8 of 20 completed

Continue to Next Topic

Indian Economy - Understanding the basics of Indian economic system

Next Topic

Study Notes

Download Solution PDF

Why do silver articles become black after a certain period of time?

Silver reacts with Carbon Dioxide in the air and loses its shiny surface.

Silver reacts with Sulphur to form a coating of Silver Sulphide

Silver reacts with moisture in atmosphere and turns slowly from brownish to black colour.

Silver reacts with atmospheric oxygen to form the oxide of Silver.

Explanation:

o Silver articles turn black after a certain period of time as it reacts with Sulphur to form a coating of Silver Sulphide. Some foods or everyday items containing sulfur can cause tarnishing. However, the polluted air can also turn sterling silver black.

By: Vishal

Profile ResourcesReport error

Trial Period Ended