Question

Iron and phosphorus powder are mixed together to form a magnetic black and red mixture. This is a

• A. Chemical change
• B. Physical change
• C. Irreversible change
• D. No change

Answer 1

The correct option is B

Physical change

When iron and phosphorus are mixed, they form a black and red mixture which is magnetic in nature. This means that they are mixed physically but this mixture didn't give rise to any new substance. Also, the properties of both the iron and phosphorus are still present in the mixture, like the magnetic property and the colour.
So the change that occurred is a Physical change.