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Which two observations below can be evidence that a chemical change has occurred A. Production of bubbles (a gas) B. melting C. vaporization D. production of heat
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Which two observations below can be evidence that a chemical change has occurred

A. Production of bubbles (a gas)
B. melting
C. vaporization
D. production of heat

User Rajan Lagah
by
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1 Answer

5 votes
Vaporization and Production of bubbles. Production of heat and melting are physical changes
User Ornithopter
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