Liquid - GCSE Physics Definition

In the context of GCSE Physics, a liquid is one of the primary states of matter, distinctively characterised by having a definite volume but no fixed shape. Liquids adapt to the shape of their containers while maintaining a consistent volume unless affected by external pressure or temperature changes. In a liquid, the particles are more closely packed than in a gas but less so than in a solid, enabling them to move freely and flow. This fluidity allows liquids to be easily poured. Understanding liquids is crucial in exploring concepts like density, buoyancy, and pressure in physics.