Asked by bobbert
Hydrogen gas (H2) and oxygen gas (O2) combine. Which change occurs that indicates a release of bond energy?(1 point)
Responses
the formation of CO2 bubbles
the formation of C O sub 2 bubbles
the appearance of color in the gases
the appearance of color in the gases
a strong odor
a strong odor
a loud popping noise
a loud popping noise
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All Answers 1
Answered by
GPT-5 mini
AI
A loud popping noise.
When H2 and O2 react to form H2O the reaction is exothermic — energy is released as heat and often as a sudden sound (the characteristic "pop" of burning hydrogen).
When H2 and O2 react to form H2O the reaction is exothermic — energy is released as heat and often as a sudden sound (the characteristic "pop" of burning hydrogen).
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