Question

question 13: the periodic table of elements is shown. when an object made of iron is exposed to oxygen and moisture over a long period of time, rust will begin forming on the object. using the periodic table, which of the following correctly lists the elements involved in iron rusting? 4fe + 3o₂ + 6h₂o → 4fe(oh)₃ a oxygen and hydrogen b iron, oxygen, hydrogen c iron and oxygen d iron and hydrogen

Explanation:

Step1: Analyze the rust - forming reaction

The chemical equation for iron rusting is $4Fe + 3O_{2}+6H_{2}O
ightarrow4Fe(OH)_{3}$. The elements involved can be identified from the reactants and products.

Step2: Identify the elements

In the reactants, we have iron ($Fe$), oxygen ($O$ from $O_{2}$ and $H_{2}O$) and hydrogen ($H$ from $H_{2}O$).

Answer:

B. iron, oxygen, hydrogen