In any demonstration to students, producing light and sound usually ensures interest and can enhance understanding and retention of the concepts involved. A guided inquiry (Predict, Observe, Explain: POE) approach was used to involve the students actively in their learning about the explosive combustion of fine flour particles in air in the presence of sparks. It also provides an opportunity to explore chemical safety in industrial chemical settings. Tapioca flour is essentially a dry powdery starch (carbohydrate) prepared from the roots of the cassava (manioc) plant. It shares with potato starch the general structure (C[subscript 6]H[subscript 10]O[subscript 5])n. (Contains 3 figures.)