Given the question: Answer the following question given this paragraph: Oxidation can be defined as the addition of oxygen to a molecule or the removal of hydrogen from a molecule. When an alkane is heated in the presence of an appropriate catalyst, it can be oxidized to the corresponding alkene in a reaction called a dehydrogenation reaction. Two hydrogen atoms are removed in the process. The alkene can be further oxidized to an alkyne by the removal of two more hydrogen atoms. Q: What is the addition of oxygen to a molecule or the removal of hydrogen from a molecule called? Choices: - precipitation - evaporation - ionization - oxidation A:
The answer is:
oxidation