#26 - Energetics

Edexcel IGCSE Chemistry - The Companion Audio Guide

Learn about energetics: exothermic reactions release heat, increasing temperature, while endothermic reactions absorb heat, lowering temperature. Calorimetry measures enthalpy change (ΔH) by recording temperature changes during reactions, such as combustion or neutralisation. The heat energy transferred is calculated using the formula Q = mcΔT, helping determine the energy change per gram or mole of a substance.