Here's how to convert the word equation into a balanced chemical equation:

Word Equation: Aluminum bromide + Chlorine gas → Aluminum chloride + Bromine gas

Chemical Equation: AlBr₃ (s) + Cl₂ (g) → AlCl₃ (s) + Br₂ (g)

Balancing the Equation:

* Aluminum (Al): The equation has one Al atom on each side, so it's balanced.

* Bromine (Br): There are three Br atoms on the left side (in AlBr₃) and two on the right (in Br₂). To balance, we need to use a coefficient of 3/2 in front of Br₂.

* Chlorine (Cl): There are two Cl atoms on the left (in Cl₂) and three on the right (in AlCl₃). To balance, we need to use a coefficient of 3/2 in front of Cl₂.

Balanced Chemical Equation:

2 AlBr₃ (s) + 3 Cl₂ (g) → 2 AlCl₃ (s) + 3 Br₂ (g)