Difference Between Crystalline and Amorphous

Difference Between Crystalline and Amorphous

The three basic states of matter are solid, liquid, and gaseous, respectively. Molecules, ions, and atoms are sorted according to whether or not they are grouped in a specific pattern or are randomly dispersed. Solids can be further divided into crystalline and amorphous based on their crystal structure. The chemical and physical features of these two solids allow for easy differentiation.

Crystalline Vs. Amorphous

Crystalline materials differ structurally from amorphous materials. In contrast, crystals have a more defined shape and the ions are grouped in a certain pattern known as the crystal lattice. But in an amorphous solid, the molecules are dispersed and grouped in no particular sequence.


It is a type of solid material made up of atoms or ions grouped in an orderly microscopic structure, which further creates the crystal lattice, which extends in all directions. The melting point of all crystalline substances is the same. Crystal structure refers to the arrangement of atoms in a crystal. The atoms are arranged in a regular pattern. Despite the fact that not all solids are crystals.

The unit cells of a crystal structure stand out. To build a crystal, the unit cells are layered in a three-dimensional manner. A flat surface with acute angles distinguishes crystals, which is the most common way to identify them. If you only feel or look at them, it’s impossible to tell if anything is crystalline or nanocrystalline. Based on their chemical and physical characteristics, they can be distinguished from each other.

To dissolve the intermolecular force of a crystalline solid, a high temperature is required. They have a set melting and boiling point because of their molecular arrangement. However, the physical properties alter when they are cut in any particular direction, hence it is called anisotropic.

When cooled, a crystalline solid can transform into an amorphous state. A structured glass can be formed from quartz, for example, which is composed of oxygen and silicon in a crystalline form. The crystalline process is often avoided in order to obtain an amorphous solid as a final industrial product.

Crystals can be classified into seven different types depending on the lattices and lines they include, including tetragonal, hexagonal, orthorhombic, trigonal, cubic, and monoclinic. The type of particles and chemical bonds that make up a crystalline solid also have a role in its classification as a crystalline solid. Crystalline solids can be classified into four categories based on their crystal structure.


The Greek word amorphous, which means “shapeless,” is the source of the English word amorphous. They are made up of a variety of different shapes and sizes of solid particles. Similarly, the crystalline phase of a comparable compound’s basic structural unit can be found in these blocks.

Solids that are amorphous don’t have a correct 3-D long-range arrangement of crystalline material in them. If the building blocks are connected, the substance can be either a solid or a liquid. In contrast to liquids, which have a low degree of connectedness, solids have a high degree of connectivity.

No matter how hot you heat an amorphous solid, it can turn into a liquid at any point in time. Solids that are amorphous are usually isotropic (perform uniform properties in all directions).

Rapid cooling can transform any crystalline solid into an amorphous state. There is no way to arrange their particles into crystals using them. When left for a prolonged amount of time below its melting point, an amorphous solid can be converted back into a crystalline one. Interconnected structural blocks make up the amorphous substance’s interior structure, which resembles that of crystalline material.

Both natural and man-made materials can be found in an amorphous solid. When it comes to Amorphous, glass is the most commonly used example. There are few non-crystalline amorphous solids apart than film lubricants and metallic glasses. Amorphous solids can form if the liquid phase is rapidly chilled.

Difference Between Crystalline and Amorphous

  • Crystal lattice is another name for crystalline solids, which are extraordinarily well-ordered in their molecular composition. In contrast, the molecules within an amorphous solid are disorganized and lack structure.
  • The melting point of a crystalline solid is known, but the melting point of an amorphous solid is unknown. Over a range of temperatures, they’ll all melt away.
  • Amorphous solids are isotropic in comparison to anisotropic crystalline solids.
  • Solids are either crystallized or amorphous, and their symmetry depends on the composition of the atoms.
  • Quartz is a crystalline substance, whereas glass is an amorphous one.


Solids, liquids, and gases are all three forms of matter. It all comes down to how close or far away the molecules are packed together. The two broad categories of solids are crystalline and amorphous. Based on structure, melting point, physical characteristic, and symmetry, they can be distinguished from each other.

There is a distinct shape and structure to crystalline substances. The solid’s molecules are organized in a specific way. In terms of melting point, they’re all the same. The crystalline structure is non-uniform. Pseudo-solids, on the other hand, are amorphous. Molecules are grouped in a random fashion within the cell. The melting points of these materials vary widely. They have a wavy or crooked form.

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