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In the activity mixing barium hydroxide with ammonium chloride, touching the test tube reveals that it becomes cold. This indicates the reaction is:

Question
In the activity mixing barium hydroxide with ammonium chloride, touching the test tube reveals that it becomes cold. This indicates the reaction is:
Exothermic
Endothermic
A combination reaction
A displacement reaction
Answer
Endothermic
Detailed Explanation
A test tube that becomes cold to the touch indicates the reaction is absorbing energy from its surroundings, making it endothermic.
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