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Is breaking bonds endothermic or exothermic?

A quick way to remember this is BENDO MEX:

Breaking bonds is ENDOthermic = +ve enthalpy change

Making bonds is EXothermic = -ve enthalpy change

Laura S. GCSE Chemistry tutor, GCSE English tutor, GCSE Biology tutor...

1 year ago

Answered by Laura, an IB Chemistry tutor with MyTutor


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Matt E.

Degree: Molecular Biology (Doctorate) - Queen's, Belfast University

Subjects offered: Chemistry, Science+ 4 more

Chemistry
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“I am a first year PhD student at the School of Biological Sciences at Queen's University, Belfast, having graduated with a first class honours degree in Biology from QUB. My research focuses on the molecular mechanisms underpinning th...”

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Degree: Chemistry (Bachelors) - Edinburgh University

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Chemistry
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“I am currently an (environmental) chemistry student at the University of Edinburgh, and I will be the first to admit I am a science geek. Now, if science is not your thing, I hope that by the end of one of my sessions you might start ...”

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Degree: biochemistry with proffesional/Industrial experience (Bachelors) - Manchester University

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Laura S.

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Degree: Combined Honours in Social Sciences (Bachelors) - Durham University

Subjects offered: Chemistry, Maths+ 4 more

Chemistry
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“About Me: I am a student studing Combined Honours in Social Sciences at Durham University, specifically Anthropology, Psychology and Politics. Having studied the IB at school, I have an interest in a wide variety of subjects, and woul...”

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