The powdered iron is magnetic, but the powdered sulfur is not. If they both form a mixture in a beaker at room temperature the iron retains its magnetic properties.
Step-by-step explanation:
Mixing of iron with sulfur, No chemical reaction occurs. This a type of physical reaction so no changes occur.
The iron retains its magnetic properties. If this mixture is heated for a certain degree celsius.
Then it undergoes a chemical reaction. The iron mixed with the sulfur to form iron sulfide(FeS).