---
title: "Condensation — AP Chem Definition & Exam Guide"
description: "Condensation is the exothermic gas-to-liquid phase change. Learn how AP Chem tests it in phase change energy (6.5), equilibrium (7.1), and real gases (3.6)."
canonical: "https://fiveable.me/ap-chem/key-terms/condensation"
type: "key-term"
subject: "AP Chemistry"
---

# Condensation — AP Chem Definition & Exam Guide

## Definition

Condensation is the process where a gas turns into a liquid due to a decrease in temperature or pressure.

## Related Study Guides

- [3.6 Deviation from Ideal Gas Law](/ap-chem/unit-3/deviation-ideal-gas-law/study-guide/8FjXF3vZolkQTXL0mCkm)

## Review

### Related Terms

- [Vaporization](/ap-chem/key-terms/vaporization): The phase transition from liquid to gas.
- Dew Point: The temperature at which air becomes saturated with water vapor, leading to condensation.
- Relative Humidity: The amount of moisture in the air compared to the maximum amount of moisture that air could hold at that same temperature.