Every substance can be represented by a chemical formula. The chemical formula tells you which chemical elements the substance is made of. In a chemical formula, each chemical element is represented by its atomic symbol.

Question

The models below represent molecules of three different substances. Each substance has a different chemical formula.
Select the model that represents a molecule of the substance with the chemical formula ICl.

H

S

Cl

Br

I

Answer 1

The chemical formula ICl represents iodine monochloride, which consists of one iodine (I) atom and one chlorine (Cl) atom.

To identify the correct model, you should look for a molecule that contains one iodine atom and one chlorine atom. If you see a model that has these two atoms connected to each other (with the appropriate atomic symbols), that is the model that represents ICl.

If the models are labeled with the atomic symbols, look specifically for a model showing two atoms: one labeled "I" for iodine and the other labeled "Cl" for chlorine.