Energy ChangesKey Facts
Key Facts: Endothermic Reactions
Part of Endothermic Reactions — GCSE Chemistry
This key facts covers Key Facts: Endothermic Reactions within Endothermic Reactions for GCSE Chemistry. Revise Endothermic Reactions in Energy Changes for GCSE Chemistry with 20 exam-style questions and 14 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. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 7 of 12
Practice
20 questions
Recall
14 flashcards
📌 Key Facts: Endothermic Reactions
- Temperature decreases — the reaction mixture and surroundings get colder
- Energy is absorbed — transferred from surroundings into reaction
- ΔH is positive — enthalpy change is greater than zero (e.g., ΔH = +178 kJ/mol)
- Energy profile goes up — products higher than reactants on diagram
- Everyday uses: Sports cold packs, some cooking processes
- Often need continuous heating — thermal decomposition requires heat input