what do you observe when fireworks explode ? is anything new formed ? why type of change is it ?
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If you burn a certain chemical it will make a physical change which changes the colour. The metal or metals within the pyrotechnic mixture and the burning temperature dictate the color and intensity of the light. Basically, when certain metals are heated to the right temperature, electrons momentarily jump between so-called electron shells, or energy levels within the atoms.
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it is irreversible change
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