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Published byJoleen Sherman Modified over 5 years ago
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Clicker #1 Which is lower in potential energy and more stable?
unburned match or burned match A) unburned match B) burned match
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Exothermic: more energy leaves the system overall
Endothermic: more energy goes into the system overall 2H2 + O2 2H2O 2H2O 2H2 + O2
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Example #1 Is the freezing of water an endothermic or exothermic process? (The system is underlined.) Exothermic
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Clicker #2 Is the boiling of water an endothermic or exothermic process? (The system is underlined.) A) endothermic B) exothermic
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Example #2 Is an activated cold pack an endothermic or exothermic process? (The system is underlined.) Endothermic
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Clicker #3 Is an activated hot pack an endothermic or exothermic process? (The system is underlined.) A) endothermic B) exothermic
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Clicker #4 Is a racquetball frozen by liquid nitrogen an endothermic or exothermic process? (The system is underlined.) A) endothermic B) exothermic
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Example #3 Is the thermite reaction (the chemical reaction) an endothermic or exothermic process? (The system is underlined.) Exothermic
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