Energy ChangesDiagram

Exothermic vs Endothermic Energy Profiles

Part of Exothermic Reactions — GCSE Chemistry

This diagram covers Exothermic vs Endothermic Energy Profiles within Exothermic Reactions for GCSE Chemistry. Revise Exothermic Reactions in Energy Changes for GCSE Chemistry with 20 exam-style questions and 14 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 2 of 12 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.

Topic position

Section 2 of 12

Practice

20 questions

Recall

14 flashcards

📊 Exothermic vs Endothermic Energy Profiles

Comparison of exothermic and endothermic reactions showing energy level changes

Figure 1: Energy level diagrams comparing exothermic (products lower) and endothermic (products higher) reactions

Keep building this topic

Read this section alongside the surrounding pages in Exothermic Reactions. That gives you the full topic sequence instead of a single isolated revision point.

The Chemistry of Warmth How It Works: Why Energy is Released Deep Dive: Where Does the Energy Go?Measuring Temperature Change in the Lab

Practice Questions for Exothermic Reactions

In an exothermic reaction, energy is transferred:

A. From the surroundings to the reaction mixture
B. From the reaction mixture to the surroundings
C. Neither absorbed nor released
D. Only as light, not heat

1 markfoundation

Explain, in terms of bond breaking and bond making, why combustion is an exothermic reaction.

2 marksstandard

Quick Recall Flashcards

What is an exothermic reaction?

A reaction that releases/transfers energy to the surroundings

What does "exo" mean?

Outside/exit — energy exits to surroundings

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The Chemistry of Warmth

How It Works: Why Energy is Released