kideissä

Kideissä is a Finnish term that translates to "in crystals" or "crystalline" in English. It refers to a state of matter where atoms, molecules, or ions are arranged in a highly ordered, repeating three-dimensional structure. This ordered arrangement is characteristic of solid crystalline materials. The fundamental repeating unit within this structure is called a unit cell.

The macroscopic properties of crystalline solids are directly influenced by their internal crystalline structure. For instance, the shape of a crystal, its hardness, cleavage properties, and melting point are all determined by the specific arrangement and bonding of the constituent particles. Common examples of crystalline materials include table salt (sodium chloride), sugar (sucrose), metals like iron and copper, and many minerals.

In contrast to amorphous solids, which lack long-range order, crystalline materials exhibit distinct geometric shapes and often possess sharp melting points. The study of crystals and their formation is known as crystallography. This field is crucial in various scientific disciplines, including chemistry, physics, geology, and materials science, for understanding the structure, properties, and applications of a vast range of substances.