Podcast
Questions and Answers
What term describes the regular repeating three-dimensional structure formed by the constituents of a solid?
What term describes the regular repeating three-dimensional structure formed by the constituents of a solid?
- Regular array
- Crystal lattice (correct)
- Uniform arrangement
- Amorphous lattice
What is the defining feature of crystalline solids?
What is the defining feature of crystalline solids?
- Regular ordered arrays (correct)
- Irregular atomic positions
- Inconsistent intermolecular forces
- Amorphous arrangement
What characteristic distinguishes crystalline solids when exposed to x-rays?
What characteristic distinguishes crystalline solids when exposed to x-rays?
- Random pattern
- Distinctive internal structures (correct)
- Shapeless faces
- Inconsistent angles
What does the term 'amorphous' mean in the context of solids?
What does the term 'amorphous' mean in the context of solids?
In crystalline solids, what are the positions of the atoms, molecules, or ions considered to be?
In crystalline solids, what are the positions of the atoms, molecules, or ions considered to be?
What do the characteristic angles produced by crystalline structures depend on?
What do the characteristic angles produced by crystalline structures depend on?
What characteristic property distinguishes amorphous solids from crystalline solids?
What characteristic property distinguishes amorphous solids from crystalline solids?
Why do amorphous solids tend to have irregular, often curved surfaces when cleaved or broken?
Why do amorphous solids tend to have irregular, often curved surfaces when cleaved or broken?
What determines the angles at which the faces of a covalent solid such as a cut diamond meet?
What determines the angles at which the faces of a covalent solid such as a cut diamond meet?
Why do ionic crystals break along fixed planes when cleaved?
Why do ionic crystals break along fixed planes when cleaved?
What characteristic property allows crystalline solids to have sharp, well-defined melting points?
What characteristic property allows crystalline solids to have sharp, well-defined melting points?
What type of solid is characterized by having a highly ordered arrangement of silicon and oxygen atoms?
What type of solid is characterized by having a highly ordered arrangement of silicon and oxygen atoms?
What determines the local environments in a crystalline lattice to be the same?
What determines the local environments in a crystalline lattice to be the same?
What causes some substances to solidify in amorphous form when the liquid phase is cooled rapidly enough?
What causes some substances to solidify in amorphous form when the liquid phase is cooled rapidly enough?
What determines whether a substance forms amorphous or crystalline structure when solidifying?
What determines whether a substance forms amorphous or crystalline structure when solidifying?
Why does amorphous aluminum form only when cooled at an extraordinary rate?
Why does amorphous aluminum form only when cooled at an extraordinary rate?
