Topics 5 & 15 : Energetics/thermochemistry

IB Chemistry: Topics 5 & 15 : Energetics/thermochemistry

If bonding is “the key to understanding Chemistry” (see Topics 4 & 14 : Chemical bonding & structure) then Energetics/thermochemistry is equally important as it underpins the whole of bonding. There are several ways in which Chemistry can be defined but essentially when a chemical reaction occurs bonds are broken and new bonds are formed. Breaking bonds requires energy and energy is given out when new bonds are formed.

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