Understanding Solids: Amorphous vs Crystalline

What is a key characteristic of amorphous solids?

• They have a crystalline structure.

• They are always rigid and brittle.

• They exhibit a uniform molecular arrangement.

• They lack a long-range ordered structure.

How do crystalline solids differ in structure from amorphous solids?

• Crystalline solids are always liquid at room temperature.

• Amorphous solids have a regular, ordered structure.

• Crystalline solids have a regular, ordered structure, while amorphous solids have a disordered, random structure.

• Crystalline solids are less stable than amorphous solids.

What is one common property of amorphous solids?

• They have a crystalline structure.

• They exhibit a fixed melting point.

• They are always transparent.

• They lack a long-range order in their atomic structure.

Name a property that is typically found in crystalline solids.

• Random arrangement of atoms

• Variable boiling point

• Definite melting point

• Amorphous structure

What is an example of a crystalline solid?

• Ice (frozen water)

• Table salt (sodium chloride)

• Rubber (synthetic polymer)

• Sugar (sucrose)

Which of the following is a property of amorphous solids: isotropy or anisotropy?

• isotropy

• brittleness

• ductility

• crystallinity

What is the melting behavior of crystalline solids?

• Crystalline solids instantly vaporize when heated.

• Crystalline solids melt at a specific temperature, transitioning from solid to liquid when enough energy is absorbed.

• Crystalline solids do not melt and remain solid indefinitely.

• Crystalline solids melt at varying temperatures depending on their shape.

Give an example of an application of amorphous solids.

• Concrete used in construction.

• Metals used in machinery.

• Crystalline structures in gemstones.

• Optical lenses made from glass.

What is a common use of crystalline solids in everyday life?

• Glass is a common crystalline solid used in electronics.

• Sugar cubes (sucrose) are a type of liquid.

• Table salt (sodium chloride) is a common use of crystalline solids.

• Plastic containers are made from crystalline solids.

How do the mechanical properties of amorphous solids compare to those of crystalline solids?

• Amorphous solids are always stronger than crystalline solids.

• Crystalline solids are more flexible than amorphous solids.

• Amorphous solids have a more ordered structure than crystalline solids.

• Amorphous solids are generally more flexible and less strong than crystalline solids, which are stronger and stiffer due to their ordered structure.