IB Chemistry HL 1.1.2 Endothermic vs. exothermic
IB Chemistry HL 1.1.2 Endothermic vs. exothermic
Practise deciding whether a reaction is endothermic or exothermic from temperature change, bond breaking, and the relative enthalpy of products and reactants.
How this is tested
- identify an exothermic reaction from a temperature rise and products below reactants on a profile
- state that bond breaking requires energy input, so the process is endothermic
- use a simple energy profile to decide if heat is released or absorbed from product position