Energetics is such a broad topic students sometimes have difficulty understanding what the question is asking for. This post aims to help build a mental shortcut for students to “funnel” the question into broad question types. Thereafter to quickly apply the thought process for solving it.
In the picture below, you see the four broad question structures on the left. On the right side is the approach to solve certain types of questions. Additionally, there are also acronyms to help students remember the sequence of answer, e.g. F.A.I.L for Born Haber Cycles and BE.R.P. for bond energy.
Energy cycles can only be done well if you have a good grasp of the common definitions of different enthalpy change. Point 5 on the left shows the three main components of definitions for enthalpy change.
Energy level diagrams are simply a special type of energy cycle where the arrows point upward for endothermic reactions and downwards for exothermic reactions. Learn how to construct energy level diagrams quickly in our weekly classes. It is easier to learn how to construct energy cycles/levels when you can see how other students do it. Moreover, we can also see what kind of mistakes are commonly made.
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More Energetics!(Born Haber Diagram)