| A | B |
| Cis Isomer | When molecules are bonded on same side |
| Trans Isomer | When molecules are bonded on opposite sides |
| Enantiomer | Non-superimposable image of molecule |
| Chiral | Molecule with 4 different molecules bonded |
| Alkene | Hydrocarbon with at least 1 double bond |
| Alkyne | Hydrocarbon with at least 1 triple bond |
| Alcohol | Class that contains -OH functional group |
| Aldehyde | Class that contains -CHO functional group |
| Carboxylic Acid | Class that contain -COOH functional group |
| Amines | Class that contains -NH2 functional group |