Copper and chlorine compounds makes blue fire work. Why?

1.	Copper and chlorine compounds makes blue fire work. Why?
Answer» Solution :To produce colours, fire works EXPERTS BURN the METAL and chlorine together in a vapour, where the two elements are gases instead of solid. (ii) The burning excites the electron pushing them into a higher than normal the electrons returns to their normal level, they release their extra energy as a colour BURST of light. (iii) True blue fireworks are the hardest to make since the compound copper breaks down in a HOT flame

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