This definitions covers Key Definitions within Reversible Reactions for GCSE Chemistry. Revise Reversible Reactions in Rates of Reaction for GCSE Chemistry with 20 exam-style questions and 12 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 7 of 12 in this topic. Make sure you can use the exact wording confidently, because definition marks are often lost through vague language.
📖 Key Definitions
Reversible reaction: A reaction in which the products can react together to reform the original reactants. Shown by the ⇌ symbol in an equation.
Forward reaction: The reaction proceeding from left to right in the equation (reactants → products).
Backward reaction: The reaction proceeding from right to left in the equation (products → reactants).
Closed system: A system where no substances can enter or leave. Reversible reactions can reach equilibrium only in a closed system.
Practice questions for Reversible Reactions
What does the symbol ⇌ mean when used in a chemical equation?
Explain the relationship between the energy changes in the forward and reverse reactions of a reversible reaction.