Learning objective

Create and label reaction pathway diagrams for exothermic and endothermic reactions, including reactants, products, overall energy change, and activation energy.

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Cambridge IGCSE Combined ScienceChemical energeticsSupplement contentPractical objective

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Quick explanation

Create and label reaction pathway diagrams for exothermic and endothermic reactions, including reactants, products, overall energy change, and activation energy

This point belongs to Exothermic and endothermic reactions, especially Exothermic and endothermic reactions outcomes.
You need to be able to create and label reaction pathway diagrams for exothermic and endothermic reactions, including reactants, products, overall energy change, and activation energy.
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Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

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This objective helps connect Exothermic and endothermic reactions outcomes to exam-style questions, flashcards, and revision notes for Exothermic and endothermic reactions.

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Paper 6 structured question: Exothermic and endothermic reactions

Paper 6Alternative to PracticalPractical1 marks

Method

Investigating Exothermic and Endothermic Reactions

You are required to design an experiment to investigate the energy changes in exothermic and endothermic reactions. Identify the variables involved in your experiment.

a
State Identify the independent variable in your experiment.
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Related learning objectives

Explain that an exothermic reaction releases thermal energy to the environment, resulting in a rise in the surrounding temperature.
Exothermic and endothermic reactions outcomes
Explain that an endothermic reaction absorbs thermal energy from the environment, causing a drop in the surrounding temperature.
Exothermic and endothermic reactions outcomes
Analyze reaction pathway diagrams that illustrate both exothermic and endothermic reactions.
Exothermic and endothermic reactions outcomes
Define activation energy as the minimum energy required for colliding particles to initiate a reaction.
Exothermic and endothermic reactions outcomes
Recognize that breaking bonds is an endothermic process while forming bonds is an exothermic process.
Exothermic and endothermic reactions outcomes

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