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Work Done on or by the System (w)

Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team • Last updated August 2025

Definition

This refers to work done on a system when energy is transferred from the surroundings to the system, and work done by a system when energy is transferred from the system to its surroundings.

AP course connection

Topic 6.6: 6.6 Introduction to Enthalpy of Reaction

Unit 6

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Review this concept in 6.6 Introduction to Enthalpy of ReactionAP Chemistry course hub

Work Done on or by the System (w) cheat sheet for homework

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