age 1 of 43
MTL 200 MIDTERM EXAM STUDY GUIDE 2025/2026
COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES || 100% GUARANTEED
PASS <LATEST VERSION>
Bohr's Atomic Model ......ANSWER........Atoms have levels
surrounding the nucleus where electrons are found. Levels can
hold different amounts of electrons depending on their distance
from the nucleus.
Wave-Mechanical Model [Schrodinger's Model]
......ANSWER........Modern model of the atom, atoms have
electrons in "orbitals" that are like clouds around the nucleus
Quantum Numbers ......ANSWER........A set of four numbers that
specify the properties of atomic orbitals and the properties of
electrons in orbitals
,age 2 of 43
Principal Quantum Number (s) ......ANSWER........symbolized by n,
indicates the main energy level/shell occupied by the electron. N
is the row in the periodic table
Secondary Quantum Number ......ANSWER........symbol = l; tells
which sublevel the electron is on and determines the shape of the
orbital; sublevels are repetitively numbered and also lettered
Valence Electrons ......ANSWER........The electrons in the outermost
shell, which participate in the bonding between atoms.
What are the three primary material eras?
......ANSWER........Stone Age, Bronze Age, Iron Age
What are the four levels of Material Structures?
......ANSWER........Subatomic Structures, Atomic Structures, Micro
structures, Macro structures
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What are the three basic materials? ......ANSWER........Metals,
Ceramics and Polymers
Advanced Materials ......ANSWER........semiconductors,
biomaterials, smart materials, nanomaterials
atomic number ......ANSWER........the number of protons in the
nucleus of an atom, usually equals the number of neutrons
Isotope ......ANSWER........Atoms of the same element that have
different numbers of neutrons
formula for atomic mass ......ANSWER........Atomic Number +
Neutrons
mole ......ANSWER........the SI base unit used to measure the
amount of a substance 6.022 x 10^23
, age 4 of 43
Pauli Exclusion Principle ......ANSWER........An atomic orbital may
describe at most two electrons, each with opposite spin direction
Bonding Energy ......ANSWER........The energy required to
separate two atoms that are chemically bonded to each other to
an infinite distance
What does a column group represent in a periodic table?
......ANSWER........Similar valence electron
configurations/structure and chemical/physical properties
Electropositive Elements ......ANSWER........The elements have a
tendency to release valence electrons (metals) and have a low
electronegativity
Electronegative Elements ......ANSWER........The elements having a
tendency to accept valence electrons (non-metals) and have a
high electronegativity. [MC]
MTL 200 MIDTERM EXAM STUDY GUIDE 2025/2026
COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES || 100% GUARANTEED
PASS <LATEST VERSION>
Bohr's Atomic Model ......ANSWER........Atoms have levels
surrounding the nucleus where electrons are found. Levels can
hold different amounts of electrons depending on their distance
from the nucleus.
Wave-Mechanical Model [Schrodinger's Model]
......ANSWER........Modern model of the atom, atoms have
electrons in "orbitals" that are like clouds around the nucleus
Quantum Numbers ......ANSWER........A set of four numbers that
specify the properties of atomic orbitals and the properties of
electrons in orbitals
,age 2 of 43
Principal Quantum Number (s) ......ANSWER........symbolized by n,
indicates the main energy level/shell occupied by the electron. N
is the row in the periodic table
Secondary Quantum Number ......ANSWER........symbol = l; tells
which sublevel the electron is on and determines the shape of the
orbital; sublevels are repetitively numbered and also lettered
Valence Electrons ......ANSWER........The electrons in the outermost
shell, which participate in the bonding between atoms.
What are the three primary material eras?
......ANSWER........Stone Age, Bronze Age, Iron Age
What are the four levels of Material Structures?
......ANSWER........Subatomic Structures, Atomic Structures, Micro
structures, Macro structures
,age 3 of 43
What are the three basic materials? ......ANSWER........Metals,
Ceramics and Polymers
Advanced Materials ......ANSWER........semiconductors,
biomaterials, smart materials, nanomaterials
atomic number ......ANSWER........the number of protons in the
nucleus of an atom, usually equals the number of neutrons
Isotope ......ANSWER........Atoms of the same element that have
different numbers of neutrons
formula for atomic mass ......ANSWER........Atomic Number +
Neutrons
mole ......ANSWER........the SI base unit used to measure the
amount of a substance 6.022 x 10^23
, age 4 of 43
Pauli Exclusion Principle ......ANSWER........An atomic orbital may
describe at most two electrons, each with opposite spin direction
Bonding Energy ......ANSWER........The energy required to
separate two atoms that are chemically bonded to each other to
an infinite distance
What does a column group represent in a periodic table?
......ANSWER........Similar valence electron
configurations/structure and chemical/physical properties
Electropositive Elements ......ANSWER........The elements have a
tendency to release valence electrons (metals) and have a low
electronegativity
Electronegative Elements ......ANSWER........The elements having a
tendency to accept valence electrons (non-metals) and have a
high electronegativity. [MC]
