Select the correct answer. a student places a sample of white sodium bicarbonate powder in a test tube and heats it. the student observes that the sodium bicarbonate undergoes a chemical change. after the change, what must be true about the substance in the test tube? a. it is not white. b. it is a liquid. c. it is an element. d. it is not sodium bicarbonate.
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Select the correct answer. a student places a sample of white sodium bicarbonate powder in a test tu...
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