Why did it explode? . . . Baking soda and ketchup explode because they the vinegar in the ketchup reacts chemically with the baking soda. The acid-base reaction rapidly produces carbon dioxide gas, which builds intense pressure inside a closed container until it bursts. . . . #SummerCamp #LifeOfAnEducator #BakingSodaAndKetchup #DistinguishedGentleman #TheKidsLoveIt