What happens to the total energy during a chemical reaction?
An endothermic reaction takes energy from the surroundings.
Pack B, because its cooling lasts 30 minutes despite the smaller 6 ∘C6\,^{\circ}\text{C}6∘C fall.
The total energy remains constant because energy cannot be created or destroyed.
It reduces the effect of random error.
Flashcards for AQA GCSE Chemistry 5.1.1 Energy transfer during exothermic and endothermic reactions, covering the key terms, definitions and equations you need to recall for Paper 1 and Paper 2. 20 cards, matched to the AQA GCSE Chemistry (8462) specification. Recall questions account for roughly 40% of marks at GCSE Chemistry, so these target the marks you can secure before the paper starts.
