1. give an example of physical change that cannot be reversed?
2. what kind of change is object when Copper utensil appear to be greenish in colour ?
please give me the correct answer I give you 1000000 points
Share
1. give an example of physical change that cannot be reversed?
2. what kind of change is object when Copper utensil appear to be greenish in colour ?
please give me the correct answer I give you 1000000 points
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Verified answer
Answer 1
Egg being cracked or wood being ground into sawdust. ... For example, you cannot unbake a cake or unburn wood.
Answer 2
When a copper utensil is exposed to air or comes in contact with the same, a reaction takes place between copper,and gases and moisture present in the air which results in the formation of a mixture of copper compounds which imparts a green colour to the surface of the metal.