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A reaction that gives heat energy to the surroundings is [ ].
A
A reaction that gives heat energy to the surroundings is exothermic.
B
It measures the temperature change caused by energy transfer, not energy itself.
C
The bond-energy calculation is
energy change=energy in to break bonds−energy out in making bonds \boxed{\text{energy change} = \text{energy in to break bonds} - \text{energy out in making bonds}} energy change=energy in to break bonds−energy out in making bondsD
The reaction is endothermic because the value is positive.
Card 1 of 23
8.2 Heat energy changes in chemical reactions Flashcards
23 flashcards on Edexcel GCSE Chemistry 8.2 Heat energy changes in chemical reactions: the key terms, definitions and equations you need to recall for Paper 1 and Paper 2.