Chemistry · IGCSE · Edexcel · Pearson Edexcel International GCSE (9–1) Chemistry (Linear) — 4CH1 · Specification point · 3.1 · Physical chemistry · Energetics
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| Students should: |
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3.1 know that chemical reactions in which heat energy is given out are described as exothermic, and those in which heat energy is taken in are described as endothermic |