Why does the ping pong ball smoke bomb work?

The ping pong ball smoke bomb works due to the combustion of the plastic material of the ball when exposed to a flame. As the ball is heated, it releases flammable gases, and when ignited, these gases produce smoke. The smoke is a result of incomplete combustion, which generates particulate matter and other byproducts, creating the visible smoke effect. The design allows for a controlled release of these gases, enhancing the smoke production.