Alkyne

Imagine trying to squeeze through a crowded hallway when heading to your next class or meeting. Just like how the tight space between people limits your movement, an alkyne is a hydrocarbon with triple bonds that limits the movement and flexibility of the molecule. The triple bond in an alkyne is like that narrow path in a crowded hallway, creating a more rigid structure and reducing the molecule's ability to bend and rotate, much like how you can't easily maneuver or turn in a packed space.