The Iron-Sulfur Reaction
The most common iron-sulfur reaction is the formation of iron sulfide (FeS):
Fe (s) + S (s) → FeS (s)
* Fe (s): Iron in solid form.
* S (s): Sulfur in solid form.
* FeS (s): Iron sulfide in solid form.
Analyzing Particle Count
* Beginning: You have one iron atom (Fe) and one sulfur atom (S) as reactants.
* End: You have one molecule of iron sulfide (FeS) as the product. This molecule contains one iron atom and one sulfur atom.
Conclusion
The number of particles remains the same at the beginning and end of the reaction. This adheres to the Law of Conservation of Mass, which states that matter cannot be created or destroyed in a chemical reaction. The atoms simply rearrange themselves to form a new compound.
