Written by the Fiveable Content Team โข Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated August 2025
Definition
A thermodynamically unfavorable process is a reaction or transformation that does not occur spontaneously under normal conditions. It requires an input of energy to proceed.
The minimum amount of energy required for a chemical reaction to start. It acts as a barrier that needs to be overcome before the reaction can proceed.