Reversible reactions and hydration
Reversible reactions and hydration

A reversible reaction can go in both directions, so products can react to reform reactants. We show this with the symbol ⇌\rightleftharpoons⇌ instead of a one-way arrow.
Step-by-step lessons on CIE IGCSE Chemistry Reversible reactions and equilibrium. Each one builds up to exam-style questions. Build a solid grasp of atomic structure, bonding and the mole concept early, since these underpin almost every other topic, then move on to the more calculation-heavy quantitative and organic chemistry content.