As much as I would have liked to do another experiment with chocolate, I don't really have time to go buy a larger belt, so this week's experiment is related to fireworks instead. If you are in the USA, you are probably going to see fireworks for July 4th. Have you ever wondered how they get the different colors into the fireworks? If you want yellow fire, do you add yellow paint to the mixture? No, that would not work. To see how the colors get into fireworks, you will need:

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