Changes of State Flashcards 4.3

Changes of State

• Condensation: The transition of a gas into a liquid, releasing energy in the process.

• Deposition: The phase change where substances transition from a gas directly to a solid, reversing the process of sublimation.

• Evaporation: A process where liquid molecules gain enough energy to enter the gas phase, occurring at any temperature below boiling.

• Freezing: The transformation of a liquid into a solid through the loss of heat, resulting in decreased molecular movement.

• Melting: The phase change where a solid absorbs heat and becomes a liquid, characterized by increased molecular movement.

• Sublimation: A direct conversion of a solid to a gas without passing through the liquid phase, often observed with substances like dry ice.

• Temperature: Measured by a thermometer, it indicates the average kinetic energy of particles in a substance, affecting the state of matter.

• Vaporization: The boiling process where a liquid converts to a gas, occurring at the boiling point and involving the absorption of energy.