Question

what will most likely be observed when sulfur powder and iron powder are mixed together and then add water

Answer 1

Sulfur will float and iron will sink because each will retain its properties

Answer 2

When Iron powder and Sulfur powder are mixed, no chemical reaction will occur, so you will see a physical change. The heterogeneous mixture resulting from mixing Iron powder with Sulfur powder could be easily separated using a magnet. When heating both compounds; however, it is possible to observe a chemical change as Iron Sulfide is formed. This product looks dark, shiny and is solid.