Final answer:
An impurity can lower the melting point of an organic compound.
Step-by-step explanation:
Impurities can affect the melting point of organic compounds.
If an impurity is present in an organic compound, it disrupts the regular arrangement of molecules, making it more difficult for the compound to overcome intermolecular forces and transition from solid to liquid.
This results in a lower melting point compared to a pure organic compound.