What are the differences between internal and terminal alkynes in terms of their chemical properties and reactivity?

Internal alkynes have a triple bond between carbon atoms within the molecule, while terminal alkynes have a triple bond at the end of the carbon chain. Terminal alkynes are more reactive due to the presence of a hydrogen atom on the terminal carbon, making them more susceptible to nucleophilic attack. Internal alkynes are less reactive and more stable due to the lack of a hydrogen atom on the internal carbon.