Ch3 Questions (my answers) Flashcards
(7 cards)
1
Q
What do we need to define a 2D packed structure?
A
2 sides and 1 angle
2
Q
What do we need to define a 3D packed structure?
A
3 sides and 3 angles
3
Q
Between metals, ceramics, and polymers which has the highest
density and why?
A
Metals because they have closely packed atoms
4
Q
Theoretical density formula is nA/V_cN_A. What do these variables mean?
A
n = number of atoms/unit cell; A= atomic weight, V_c = a^3, N_A is avogadro’s number
5
Q
What is Bragg’s equation?
A
nλ= 2dSinθ
6
Q
d_(hkl)=
A
a/sqrt(h^2+k^2+l^2)
7
Q
Is diamond anisotropic or isotrophic? Why
A
anisotropic because it is directional
