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What do the colors produced by fireworks indicate? a. a physical change c. a state change b. a chemical change d. an element change

What do the colors produced by fireworks indicate? a. a physical change c. a state change b. a chemical change d. an element change
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what do the colors produced by fireworks indicate? a. a physical change c. a state change b. a chemical change d. an element change

User Hafenkranich
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B. A chemical change 
User Eric Bloch
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