Edexcel IGCSE Chemistry · Spec 3.1-3.4
Exothermic & Endothermic Reactions; Calorimetry
Exothermic and endothermic reactions, and measuring temperature change by calorimetry.
Chemistry revision video
Exothermic & Endothermic Reactions; Calorimetry
Prefer to watch on YouTube? Open this video on YouTube.
Spec 3.1-3.4
What you need to know
- Tell exothermic and endothermic reactions apart
- Give examples of each
- Describe how calorimetry measures an energy change
Active recall
Quick check
Answer each question before opening the answer.
What is the difference between exothermic and endothermic reactions?
Exothermic reactions release heat so the temperature rises (e.g. combustion, neutralisation); endothermic reactions take in heat so the temperature falls (e.g. thermal decomposition).
What does calorimetry measure?
The temperature change of a reaction, used to work out the energy released or absorbed.
Chemistry video companion
Keep your notes and exam practice together
The free Chemistry workbook follows every video in specification order.