Summary:
- Organic chemistry is three-dimensional.
- Molecules can differ in the way the atoms are arranged.
- The same combination of atoms can be assembled in more than one way.
- These compounds are known as isomers.
- Isomers are molecules with the same molecular formulas, but different arrangements of atoms.
- In alkenes, there are multiple structural isomers based on where in the chain the double bond occurs.
- In alkynes, alkynes display structural isomerism beginning with 1-butyne and 2-Butyne.