The chemical equation represents how rust forms from iron and oxygen. Use the diagram to count the number of atoms in the reactants and products. Fill in the table with your answers.

Question

Alt: A chemical equation reads: 4Fe + 3O2 --> 2Fe2O3. Below the equation, circles represent each atom in the reaction. On the left side are four gray circles and three groups of two red circles. On the right side are two groups of three red and two gray circles.
Choose answers from the answer bank to place in the table. Use the arrow keys to select an answer and press space when you're ready to drag it to a new location. Then use the arrow keys to move the answer to a response area and press space to drop it.
Reactants

Products

Iron (Fe)

Oxygen (O)
A. 3
B. 4
C. 4
D. 5
E. 6

Answer 1

To analyze the chemical equation:

4Fe + 3O₂ → 2Fe₂O₃

1. Reactants:

   • Iron (Fe): There are 4 atoms (as indicated by the "4Fe").
   • Oxygen (O): There are 6 atoms (3O₂ means 3 groups of two oxygen atoms, so 3 × 2 = 6).

2. Products:

   • Iron (Fe): There are 4 atoms in total in the product, as 2Fe₂O₃ means 2 groups of 2 iron atoms (2 × 2 = 4).
   • Oxygen (O): There are 6 atoms in total in the product, as 2Fe₂O₃ means each group contains 3 oxygen atoms, and since there are 2 groups, that means 2 × 3 = 6.

Now, filling in the table:

| | Reactants | Products | |----------|-----------|----------| | Iron (Fe) | 4 | 4 | | Oxygen (O) | 6 | 6 |

Answer Bank:

• Iron (Fe):
  • Reactants: B. 4
  • Products: C. 4
• Oxygen (O):
  • Reactants: E. 6
  • Products: E. 6

You can place the answers in the corresponding spaces in the table according to the counts above.