CHEMISTRY Chapter Notes -Supercooling, Thermal Conductivity
Document Summary
Solids with a repeating pattern of particles are called crystalline solids. They are arranged in a predictable and organised way, giving them a distinct shape. Particles are placed at random in amorphous solids. Because of their disorganised arrangement, they take on uneven shapes. Solids that are crystallised have a distinct melting point. Amorphous solids: these solids lack distinct melting points. Across a temperature range, the solid has a tendency to soften gradually. Radiant fusion heat : (the change in enthalpy when a substance is heated to change its state from solid to liquid. ) Solids that are crystallised have a distinct heat of fusion. Amorphous solids: they lack a clear heat of fusion. In other words, the magnitude of physical qualities (such refractive index, electrical conductivity, thermal conductivity, etc. ) varies along with the crystal"s orientation. In other words, the solid"s physical qualities are the same in all directions and in the same magnitude.
