A solid made up of crystals in which particles are arranged in a regular, repeating pattern is called a what?

A solid made up of crystals in which particles are arranged in a regular, repeating pattern is called a what?

• A. Crystalline Solid
• B. Mineral
• C. Amorphous Solid
• D. Liquid Crystal

Answer: (A)

When a solid’s particles are arranged in a regular, repeating pattern, it forms a crystalline solid. That long-range order comes from a crystal lattice—a consistent, repeating arrangement of atoms or molecules throughout the material. This structure gives crystalline solids a definite melting point and predictable cleavage because the planes in the lattice break in specific, orderly ways. A mineral is a naturally occurring solid with a defined chemical composition and crystal structure, so while many minerals are crystalline, the term is more specific than the general idea of any crystal-containing solid. An amorphous solid, by contrast, lacks that regular, repeating arrangement, so its atoms are jumbled rather than organized in a long-range pattern. Liquid crystals aren’t fully solid crystals either—they flow like liquids but show some molecular alignment, not a complete three-dimensional crystal lattice. So the solid described—one with crystals in a regular, repeating arrangement—is best called a crystalline solid.

When a solid’s particles are arranged in a regular, repeating pattern, it forms a crystalline solid. That long-range order comes from a crystal lattice—a consistent, repeating arrangement of atoms or molecules throughout the material. This structure gives crystalline solids a definite melting point and predictable cleavage because the planes in the lattice break in specific, orderly ways.

A mineral is a naturally occurring solid with a defined chemical composition and crystal structure, so while many minerals are crystalline, the term is more specific than the general idea of any crystal-containing solid. An amorphous solid, by contrast, lacks that regular, repeating arrangement, so its atoms are jumbled rather than organized in a long-range pattern. Liquid crystals aren’t fully solid crystals either—they flow like liquids but show some molecular alignment, not a complete three-dimensional crystal lattice.

So the solid described—one with crystals in a regular, repeating arrangement—is best called a crystalline solid.