Liquid is one of the four primary states of matter, with the others being solid, gas and plasma. A liquid is a fluid. Unlike a … See more

Only two elements are liquid at standard conditions for temperature and pressure: mercury and bromine. Four more elements have melting points slightly above room temperature: francium, caesium, gallium and rubidium. … See more

Liquids are useful as lubricants due to their ability to form a thin, freely flowing layer between solid materials. Lubricants such as oil are chosen for viscosity and flow characteristics that are suitable throughout the … See more

Quantities of liquids are measured in units of volume. These include the SI unit cubic metre (m ) and its divisions, in particular the cubic decimeter, more commonly called the litre (1 dm = 1 L = 0.001 m ), and the cubic centimetre… See more

At a temperature below the boiling point, any matter in liquid form will evaporate until reaching equilibrium with the reverse process of condensation of its vapor. At this point the vapor will condense at the same rate as the … See more

The microscopic structure of liquids is complex and historically has been the subject of intense research and debate. A few of the key ideas are explained below.
Microscopically, liquids consist of a dense, disordered … See more

Methods for predicting liquid properties can be organized by their "scale" of description, that is, the length scales and time scales over which they apply.
• Macroscopic methods use equations that directly mo… See more