The image shows a chemical reaction between sulfur (S) and iron (Fe) to form iron sulfide (FeS). The masses are given as:
- 32g of sulfur
- 56g of iron
- These react to produce 88g of iron sulfide
This demonstrates the
Law of Conservation of Mass, which says that in a chemical reaction, matter is neither created nor destroyed. So, the total mass of the reactants should equal the total mass of the products.
Let’s check:
Reactants:
32g (S) + 56g (Fe) =
88g
Products:
88g (FeS)
✔ 88g = 88g → Mass is conserved.
This also matches the chemical formula FeS — one atom of iron combines with one atom of sulfur. The atomic masses are approximately:
- Iron (Fe) ≈ 56 g/mol
- Sulfur (S) ≈ 32 g/mol
So, 56g Fe + 32g S → 88g FeS is a perfect match for the molar masses.
Final Answer:
The reaction follows the Law of Conservation of Mass — 32g S + 56g Fe produces exactly 88g FeS.
Parent Tip: Review the logic above to help your child master the concept of law of conservation of mass on atomic level.
