1
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MATSE exam #2 Questions and Answers
(100% Correct Answers) Already Graded
A+
According to the course reading, copper is found most readily in
this form.— Ans: copper carbonate
According to the course reading, the Egyptians used tin to do
this.— Ans: make copper harder
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A unit cell is:— Ans: the small group of atoms that when repeated
form the complete material.
The atoms in a body centered lattice occupy the following
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locations:— Ans: the corners and center (middle) of the cube
For the orthorhombic crystal system:— Ans: a ≠ b ≠ c and all the
interaxial angles are equal to 90°
The hexagonal closed packed structure:— Ans: has the stacking
sequence of ABABAB...
An anisotropic material:— Ans: is a material in which properties
vary depending on which crystallographic direction the
measurements are taken.
A vacancy is a:— Ans: point defect in which an atom is missing
from a lattice site in the crystal.
An alloy is a material:— Ans: in which impurity atoms have been
added.
An edge dislocation is a:— Ans: linear defect that centers on the
line that is defined along the end of the extra half-plane of atoms.
In Metal: The Secret Life of Materials, the narrator, Mark
Miodownik, is a:— Ans: materials scientist
According to the video, the first clue to discovering copper may
have been:— Ans: green streaks
, 2
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According to Mark Miodownik, remnants from early smelting has
been found:— Ans: on a hillside
In the video, the very surprising fact about metals is:— Ans: they
are made of crystals
When you hit a metal, the atoms:— Ans: form a wave of shuffling
atoms
Iron replacing bronze was delayed because:— Ans: iron is
difficult to work with
iron:— Ans: can be purified by pounding out impurities.
Henry Bessemer, with help from Robert Forrester Mushet,
developed a way to:— Ans: mass produce large quantities of
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quality steel.
Aluminium is:— Ans: three times lighter than steel
For the production of jet engine parts, creep is prevented by:—
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Ans: growing each part from one crystal
Which of these best describes the composition of plain carbon
steel?— Ans: iron-carbon alloy with low carbon content, a little
manganese and only residual amounts of other impurities
Which of these statements is the best description of the properties
of high-carbon steel?— Ans: hardest, strongest, and least ductile
of the carbon steels
Which of these statements is the best examples of applications of
malleable iron?— Ans: connecting rods, transmission gears,
differential cases, flanges, pipe fittings, and valves
Which of these statements is the best examples of applications of
brass?— Ans: cosmetic jewelry, cartridge casings, automotive
radiators, musical instruments, electronic packaging, and coins
Which of these statements is the best description of the properties
of aluminum alloys?— Ans: low density, high electrical and
thermal conductivities, and a resistance to corrosion in the
ambient atmosphere
For Expert help and assignment solutions, +254707240657
MATSE exam #2 Questions and Answers
(100% Correct Answers) Already Graded
A+
According to the course reading, copper is found most readily in
this form.— Ans: copper carbonate
According to the course reading, the Egyptians used tin to do
this.— Ans: make copper harder
© 2025 Assignment Expert
A unit cell is:— Ans: the small group of atoms that when repeated
form the complete material.
The atoms in a body centered lattice occupy the following
Guru01 - Stuvia
locations:— Ans: the corners and center (middle) of the cube
For the orthorhombic crystal system:— Ans: a ≠ b ≠ c and all the
interaxial angles are equal to 90°
The hexagonal closed packed structure:— Ans: has the stacking
sequence of ABABAB...
An anisotropic material:— Ans: is a material in which properties
vary depending on which crystallographic direction the
measurements are taken.
A vacancy is a:— Ans: point defect in which an atom is missing
from a lattice site in the crystal.
An alloy is a material:— Ans: in which impurity atoms have been
added.
An edge dislocation is a:— Ans: linear defect that centers on the
line that is defined along the end of the extra half-plane of atoms.
In Metal: The Secret Life of Materials, the narrator, Mark
Miodownik, is a:— Ans: materials scientist
According to the video, the first clue to discovering copper may
have been:— Ans: green streaks
, 2
For Expert help and assignment solutions, +254707240657
According to Mark Miodownik, remnants from early smelting has
been found:— Ans: on a hillside
In the video, the very surprising fact about metals is:— Ans: they
are made of crystals
When you hit a metal, the atoms:— Ans: form a wave of shuffling
atoms
Iron replacing bronze was delayed because:— Ans: iron is
difficult to work with
iron:— Ans: can be purified by pounding out impurities.
Henry Bessemer, with help from Robert Forrester Mushet,
developed a way to:— Ans: mass produce large quantities of
© 2025 Assignment Expert
quality steel.
Aluminium is:— Ans: three times lighter than steel
For the production of jet engine parts, creep is prevented by:—
Guru01 - Stuvia
Ans: growing each part from one crystal
Which of these best describes the composition of plain carbon
steel?— Ans: iron-carbon alloy with low carbon content, a little
manganese and only residual amounts of other impurities
Which of these statements is the best description of the properties
of high-carbon steel?— Ans: hardest, strongest, and least ductile
of the carbon steels
Which of these statements is the best examples of applications of
malleable iron?— Ans: connecting rods, transmission gears,
differential cases, flanges, pipe fittings, and valves
Which of these statements is the best examples of applications of
brass?— Ans: cosmetic jewelry, cartridge casings, automotive
radiators, musical instruments, electronic packaging, and coins
Which of these statements is the best description of the properties
of aluminum alloys?— Ans: low density, high electrical and
thermal conductivities, and a resistance to corrosion in the
ambient atmosphere
