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
LS
Related Chemistry IB answers
All answers ▸Define the an acid/base according to the Bronsted-Lowry and Lewis theories. Support with equation to illustrate an acid-base reaction for each theory, identifying them clearly. Also state the bond type formed in an Lewis acid-base reaction.
Describe how σ and π bonds form.
Why is there a significant difference between the radii of first and second row transition metals, where as no difference (or even a decrease) is observed between the second and third rows?
How does temperature affect the rate of reaction?