Question

answer the questions in the above attachment class 8​

Answer 1

Answer:

1. we can conclude that the given metal iron ,copper is getting rust .

2. rust is the chemical rection between oxygen and metal surface .

3. the green coating on copper is rusted part of the copper

4.these change are chemical change,as there is a chemical rection between oxygen and metal surface like iron and copper ,I cannot reverse the change , hence it is a chemical change.