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5 Chemical Energetics

Cambridge AS Level Chemistry (9701) · 3 topics

Enthalpy change

Exothermic and Endothermic Reactions Chemical reactions are accompanied by enthalpy changes (ΔH) - the heat energy transferred between the system (the reaction)…
Hess's Law

Hess's Law Hess's Law The enthalpy change of a chemical reaction is independent of the route taken, provided the initial and final conditions are the same.…
Bond energy

Bond Breaking and Bond Making Enthalpy changes in reactions arise from the breaking and forming of chemical bonds: Bond breaking is always endothermic - energy…