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Most chemists older than 50 incl me became interested in chemistry because they were blowing stuff up as kids or teenagers.
In high school chem I realized that I could dissolve and mix the lead nitrate and potassium iodide that I had in my chemistry kit at home to create potassium nitrate, a component of gunpowder. And it worked, I made gunpowder by mixing in charcoal and sulfer. Then I had horribly orange lead iodide as a byproduct which I threw out hoping my parents wouldn't find it. Probably poisoned some landfill, though it wasn't a large quantity.
Prof only gave one one A per class.