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Explain that an endothermic reaction absorbs thermal energy from the environment, causing a drop in the surrounding temperature.

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Cambridge IGCSE Combined ScienceChemical energeticsCore content

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Explain that an endothermic reaction absorbs thermal energy from the environment, causing a drop in the surrounding temperature

This point belongs to Exothermic and endothermic reactions, especially Exothermic and endothermic reactions outcomes.
You need to be able to explain that an endothermic reaction absorbs thermal energy from the environment, causing a drop in the surrounding temperature.
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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 3 structured question: Exothermic and endothermic reactions

Paper 3Theory (Core)2 marks

Description

Endothermic Reaction Example

Consider the reaction of ammonium nitrate dissolving in water, which absorbs heat from the surroundings.

a
Explain the effect of an endothermic reaction on the temperature of the surroundings.
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Aim for approximately 2 distinct marking points.
[2]

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