Silver articles become black when kept in open for some time
Metals and Non-metals (10)Silver articles become black when kept in open for some time, whereas copper vessels lose their shiny brown surfaces and gain a green coat when kept in open. Name the substances present in air with which these metals react and write the name of the products formed.
Answer
Silver - sulphur in air - Silver sulphide
Copper - Moisture & Carbon dioxide - Copper Carbonate
Exam Year:
2019
Related Questions
- A student added few pieces of aluminium metal to two test tubes A and B
- What would a student report nearly after 30 minutes of placing duly cleaned strips of aluminium
- How is copper extracted from its sulphide ore
- Draw a labelled diagram of the experimental set-up to study the action of steam on a metal
- Why are the heating elements of electric toasters and electric irons
- Platinum, gold and silver are used to make jewellery