# Chapter 2 - Atoms, Molecules, and Ions - Exercises: 2.46

It is possible for two substances with the same empirical formula to have different properties because two compounds with the same simplest ratio of A atoms to B atoms can differ when it comes to the total number of A atoms and B atoms that each has.

#### Work Step by Step

The total number of A atoms and B atoms in a given compound contributes to its physical properties, not the ratio of A atoms to B atoms. Thus, if two atoms have the same empirical formula, AB, their molecular formulas are AB and A2B2 respectively, the physical properties of the two compounds will differ from one another.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.