Which of the following is a sign that a chemical reaction has occurred? Options: A . &nbspchange in shape B . &nbspmelting C . &nbspformation of a gas D . &nbspdissolving

Which of the following is a sign that a chemical reaction has occurred?

Question

Which of the following is a sign that a chemical reaction has occurred?

Options:

A . change in shape

B . melting

C . formation of a gas

D . dissolving

Answer: Option C

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