L

Liquid

Quick Reference
Also Known AsLiquid phase, liquid state, fluid (when flowing context), solvent (when used to dissolve)

What is Liquid?

A state of matter characterized by definite volume but no definite shape, taking the shape of its container. Liquid molecules are close together with weaker intermolecular forces than solids but stronger than gases. Liquids exhibit surface tension, viscosity, and capillary action.

Properties & Characteristics

A liquid is a state of matter characterised by a definite volume but no fixed shape, taking the shape of its container. Liquid molecules are close together (similar density to solids) but mobile, allowing flow. Liquids have a free surface exhibiting surface tension. They are essentially incompressible. Properties: viscosity (resistance to flow), surface tension (cohesive forces at surface), vapour pressure (partial pressure of vapour in equilibrium with liquid), and specific heat capacity.

Uses & Applications

Liquids are the most important reaction medium in chemistry (aqueous solutions, organic solvents), the dominant state of most biological processes, and essential in industrial processes (liquid feedstocks, solvents, coolants). Liquid metals (Na, Hg) are used in heat transfer and electrical contacts. Cryogenic liquids (N₂, He, O₂) are used for cooling and as chemical feedstocks.

Safety Information

Liquid hazards include: flammability (organic solvents), corrosivity (acids, bases), toxicity (many organic and inorganic liquids), cryogenic burns (liquid N₂, O₂), and pressure buildup if heated in sealed containers. Always check flash point, boiling point, and toxicity data before working with liquid chemicals.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Liquid
Synonyms Liquid phase, liquid state, fluid (when flowing context), solvent (when used to dissolve)

Frequently Asked Questions

A state of matter characterized by definite volume but no definite shape, taking the shape of its container. Liquid molecules are close together with weaker intermolecular forces than solids but stronger than gases. Liquids exhibit surface tension, viscosity, and capillary action.

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