18 Questions
What is the term for the displacement of a row of atoms from their normal position in the lattice?
Dislocation
Which term refers to the ability of a solid material to exist in more than one physical form while maintaining the same chemical structure?
Allotropy
Which of the following involves hydrocarbons with the same composition having different atomic arrangements?
Isomerism
At what temperature do displacive transitions from α to β forms take place?
573°C
Which type of transition involves only atomic displacement without bond breakage?
Displacive transition
In which material can you find different allotropic forms with the same chemical composition?
$\alpha$-quartz
What type of solids have irregular arrangement of atoms?
Amorphous solids
Which type of solids have a short range atomic order and characteristics of both crystalline and amorphous solids?
Meso-morphous solids
In which type of cubic system does each corner have 1/8 of an atom with one atom at the center of the cube?
Body centered cubic (B.C.C)
How many types of cubic systems are there?
3
What is the defining characteristic of Meso-morphous solids?
Short range atomic order
What is the atomic packing relating to the number and position of nearest neighbor atoms in a unit cell known as?
Atomic coordination
What is the defining characteristic of a solid state of matter?
Closely packed atoms held by strong forces
Which term is used to describe a crystal structure's regular arrangement of atoms in space?
Space lattice
What type of solids are characterized by atoms situated in a repeating array forming a space lattice?
Crystalline solids
What is the smallest repeating unit in a space lattice called?
Unit cell
What is the arrangement of atoms in the cubic system with respect to one another?
Repetitive 3D pattern
What type of transition is described when silica changes from one crystalline form to another?
Reconstructive transition
Test your knowledge on crystal defects such as dislocations and grain boundaries. Learn about how these imperfections impact the strength and structure of solid materials.
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