 We're going to do a simulation of a dust explosion. This is a demonstration of surface area. I'm going to put the flower inside a small container in the can. That container is hooked to a tube that runs outside the can. Inside the can is also a candle. I'm going to close the lid and blow suddenly on the tube. This will disperse the flower as a fine dust inside the can. The dust will combust rapidly, building up pressure inside the can.