Conclusion

Throughout this chapter, we’ve seen just how many different molecules can be derived from the
same molecular formula. This information is going to be essential on the MCAT—not only for
questions on isomerism itself but on every single organic chemistry question you encounter. Most of
the compounds we come across will have different possible isomers, and you need to be prepared
to differentiate among them to find the one and only correct answer. In the next chapter, we’ll
explore how organic molecules are held together through discussions of hybridized orbitals and
resonance.