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How can you tell that the fireworks exploding during a Fourth of July display do not all contain the same ingredients?

A different colors of explosions
B different shapes of explosions
C different timing of explosions
D all of the above

Respuesta :

raphy1835
I am 90% sure it's A. I know that the different ingredients causes them to be different colors.  The shapes and timings are usually man made.
Jellyfishlion
A- Different colours of explosions. Different materials will burn different colours.
Element & flame color
Calcium= orange-red
Strontium= red
Barium pale= green
Copper= blue-green (often with white flashes)

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