The trick with Chemical Energetics

Chemical Energetics is the study of energy changes in chemical reactions. Energy cannot be created nor destroyed; it can only be converted from one form to another.

Change : You can have either negative energy change ( net heat given off = exothermic), no change ( no net heat given off or taken in = equilibrium) or positive energy change (net heat taken in = endothermic)

Enthalpy Change ∆H is the net heat change of a given reaction.

The trick with Chemical Energetics is to be able to define exactly the respective enthalpy changes AND be able to convert the definition into equations with STATE SYMBOLS. (state symbols are EXTREMELY IMPORTANT and essential to include in questions and answers).

What are the definitions of ∆H that you have to know:

1) ∆H of formation
2) ∆H of reaction
3) ∆H of combustion
4) ∆H of hydration
5) ∆H of atomisation
6) ∆H of vaporization
7) ∆H of fusion
∆H of sublimation
9) ∆H of solution
10) Lattice Energy
11) Ionization energy
12) Electron Affinity

13) Define Hess’ Law

Born-Haber cycle is just a method that relates to lattice energy of ionic compounds.

So the above 12 definitions, are you able to write them into equations?