* Salt (NaCl) is soluble in water: The salt will dissolve, meaning it will break down into individual sodium (Na+) and chloride (Cl-) ions surrounded by water molecules.
* Sulfur is insoluble in water: The sulfur will remain as a solid, not reacting with the water.
The key point: No new substances are formed, just a change in the physical state of the salt. The salt ions are still present, just dispersed within the water. The sulfur remains chemically unchanged.
Here's a breakdown of what happens:
1. Salt dissolves: The water molecules surround the salt crystals, breaking them apart into ions. This is a physical change because the chemical composition of the salt hasn't changed.
2. Sulfur remains: The sulfur particles don't interact with the water and remain as a solid at the bottom or suspended in the water.
In summary: Adding water to a salt-sulfur mixture results in the salt dissolving and the sulfur remaining undissolved, demonstrating a physical change.
