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Identify that an exothermic reaction releases thermal energy to the environment, resulting in a rise in the temperature of the surroundings.

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Cambridge IGCSE ChemistryChemical energeticsCore content

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Identify that an exothermic reaction releases thermal energy to the environment, resulting in a rise in the temperature of the surroundings

This point belongs to Exothermic and endothermic reactions, especially Exothermic and endothermic reactions outcomes.
You need to be able to identify that an exothermic reaction releases thermal energy to the environment, resulting in a rise in the temperature of the surroundings.
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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)1 marks

Description

Exothermic Reaction Description

An exothermic reaction occurs when reactants release energy in the form of heat to the surroundings, causing the temperature of the surroundings to rise.

a
State the effect of an exothermic reaction on the temperature of the surroundings.
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Related learning objectives

Identify that an endothermic reaction absorbs thermal energy from the environment, causing a drop in the temperature of the surroundings.
Exothermic and endothermic reactions outcomes
Analyze reaction pathway diagrams that illustrate both exothermic and endothermic reactions.
Exothermic and endothermic reactions outcomes
Recognize that the change in thermal energy during a reaction is termed the enthalpy change (H), where H is negative for exothermic reactions and positive for endothermic reactions.
Exothermic and endothermic reactions outcomes
Define activation energy (Ea) as the minimum energy required for colliding particles to undergo a reaction.
Exothermic and endothermic reactions outcomes
Create and label reaction pathway diagrams for exothermic and endothermic reactions based on provided information, including reactants, products, enthalpy change (H), and activation energy (Ea).
Exothermic and endothermic reactions outcomes

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