Chemistry 0620: ENERGY CHANGES AND REVERSIBLE REACTIONS Topical Past Paper Questions
Cambridge IGCSE Chemistry (0620) past-paper questions on ENERGY CHANGES AND REVERSIBLE REACTIONS, free. This topic is frequently examined across 26 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
A student investigates the temperature change when sodium thiosulfate is dissolved in water. The student does five experiments. ## Experiment 1 Place a polystyrene cup into a 250 cm³ beaker for support. • Use a $ 25 \, cm^3 $ measuring cylinder to pour $ 20 \, cm^3 $ of distilled…
A student investigates the temperature change when a 5cm length of coiled magnesium ribbon reacts with excess dilute sulfuric acid. The student does five experiments. Experiment 1 * Rinse a burette with distilled water and then with dilute sulfuric acid. * Fill the burette with d…
The equation for the reaction between methanoic acid and ethanol in the presence of a catalyst can be represented as shown. $$ \mathrm{HCOOH}+\mathrm{CH}_{3}\mathrm{CH}_{2}\mathrm{OH}\rightleftharpoons\mathrm{X}+\mathrm{H}_{2}\mathrm{O}\quad\Delta H=-29.5\mathrm{kJ}/\mathrm{mol}…
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