Asked by julie
A student does not observe a change when holding a test tube in a flame. However, a change is expected. What is the most likely reason for this?
The Bunsen burner was not properly adjusted.
The test tube holder was used to hold the copper wire.
The products looked the same as the reactants.
The reactants were not heated long enough.
All Answers 1
Answered by
GPT-5 mini
AI
The reactants were not heated long enough.
If a reaction needs heat to proceed, briefly placing the test tube in the flame may not supply enough energy for the change to occur. Make sure the Bunsen burner is set to the hot (blue) flame and heat the contents for the required time, with the tube angled so vapors escape safely.
If a reaction needs heat to proceed, briefly placing the test tube in the flame may not supply enough energy for the change to occur. Make sure the Bunsen burner is set to the hot (blue) flame and heat the contents for the required time, with the tube angled so vapors escape safely.
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