Solid state Questions and Answers

Physical Chemistry
Solid stateIron sulfide has a _ melting and
boiling points.
fixed
variable
fixed and variable, respectively
fixed or variable

Physical Chemistry
Solid stateWhich of the following is an example of a solid?
Iron rod
Ice
Diamond
All of the choices

Physical Chemistry
Solid stateWhat are the typical properties of substances held together with ionic bonds, such as NCCI?
they have high melting points
when dissoved in water, ionic compounds conduct electricity
they have low melting points
they do NOT conduct heat nor electricity when in solution
they do not dissolve in water
they form crystals
they dissolve in water (dissolve means ions can break away from the crystal and move freely within the solution)
they form amorphous solids

Physical Chemistry
Solid stateNitrogen has two isotopes. One has an atomic mass of 14.003 amu and a relative abundance of 99.63% while the other isotope has an atomic mass of 15.000 amu and a relative abundance of 0.37%. What is the average atomic mass for nitrogen?
a. 14.993 amu
b. 14.778 amu
c. 14.007 amu
d. 14.456 amu

Physical Chemistry
Solid stateThe atomic radius of metal X is 1.30 x 102 picometers (pm) and a crystal of metal X has a unit cell that is face-centered cubic.
Calculate the density of metal X (atomic weight = 42.3 g/mol).

Physical Chemistry
Solid state5) A gas sample occupies 3.50 liters of volume at 20. °C. What volume will this gas occupy at 100°C (reported to three significant figures)?
A) 0.224 L
B) 2.75 L
C) 4.46 L
D) 17.5 L
E) none of the above

Physical Chemistry
Solid stateChoose the sentence that is capitalized correctly.
The meaning of Stonehenge was first discussed around 1139 in the book History of
the Kings of Britain.
The meaning of stonehenge was first discussed around 1139 in the book "History of the
Kings of Britain."
The meaning of Stonehenge was first discussed around 1139 in the book "History of the
kings of britain."

Physical Chemistry
Solid stateIdentify the definition for each of the terms.
coordination number:
unit cell:
crystalline solid:
Answer Bank
the smallest dimensions of a crystal that can be measured with a microscope
the number of atoms (or ions) bordering a cavity (or interstice) in a crystal lattice
a solid that lacks a regular, three-dimensional arrangement of atoms (e.g., glass)
the basic repeating structural unit of a crystalline solid
a solid that possesses long-range order (e.g., table salt)
the number of atoms (or ions) surrounding an atom (or ion) in a crystal lattice

Physical Chemistry
Solid stateGermanium is doped with 5 x 1015 donor atoms per cm³ at T = 300 K. The dimen-
sions of the Hall device are d = 5 x 10³ cm, W = 2 x 102 cm, and L = 10-¹
10¹ cm.
The current is I, = 250 μA, the applied voltage is V, = 100 mV, and the magnetic flux
density is B₂ = 500 gauss = 5 x 10-2 tesla. Calculate: (a) the Hall voltage, (b) the
Hall field, and (c) the carrier mobility.

Physical Chemistry
Solid stateA student thinks that 1s³ is the electron configuration for lithium. They also thinks that 1s4 is the electron configuration for beryllium. Write a brief note to the student that explains why they are incorrect.

Physical Chemistry
Solid stateThe reaction of rubidium with iodine is similar to that of sodium with iodine. Write the balanced chemical equation for the reaction of rubidium with iodine. Include phase symbols.
chemical equation:

Physical Chemistry
Solid stateImagine you are handed a mineral sample. It breaks with a conchoidal fracture but displays no cleavage. It does not react with hydrochloric acid, is a light pink color, and has a nonmetallic luster. It is harder than a streak plate, and has a specific gravity of 2.65. What mineral is it?
quartz
potassium feldspar
olivine
calcite

Physical Chemistry
Solid stateWhich phrase describes radioactive decay?
the splitting of a large nucleus into smaller nuclei
the spontaneous emission of radiation
the joining of small nuclei into a larger nucleus
the triggering of one reaction by the products of another

Physical Chemistry
Solid stateCopper crystallizes in the body-centered cubic unit cell with an edge length 390 pm.
What is he density of Copper in g/cm3? (atomic weight of copper = 63.45 amu)
A. 3.56 g/cm³
B. 3.90 g/cm³
C. 1.78 g/cm³
D.4.65 g/cm³
E. 7.12 g/cm³

Physical Chemistry
Solid stateWhen silicon is doped with antimony, antimony contributes __
lons
holes
free electrons
charges

Physical Chemistry
Solid stateWhich of the following is not a characteristic of the solid state?
particles are moving very fast
has a definite shape
particles are in fixed positions
has a definite volume
particles are close together