MTL200 Midterm Exam Questions &
Answers (Grade A+)
What are the three primary material eras? -
correct answer ✅Stone Age, Bronze Age, Iron Age
What are the four levels of Material Structures? -
correct answer ✅Subatomic Structures, Atomic Structures, Micro
structures, Macro structures
What are the three basic materials? -
correct answer ✅Metals, Ceramics and Polymers
Advanced Materials -
correct answer ✅semiconductors, biomaterials, smart materials,
nanomaterials
atomic number -
correct answer ✅the number of protons in the nucleus of an
atom, usually equals the number of neutrons
Isotope -
correct answer ✅Atoms of the same element that have different
numbers of neutrons
,MTL200 Midterm Exam Questions &
Answers (Grade A+)
formula for atomic mass -
correct answer ✅Atomic Number + Neutrons
mole -
correct answer ✅the SI base unit used to measure the amount of a
substance 6.022 x 10^23
Bohr's Atomic Model -
correct 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] -
correct answer ✅Modern model of the atom, atoms have
electrons in "orbitals" that are like clouds around the nucleus
Quantum Numbers -
correct answer ✅A set of four numbers that specify the properties
of atomic orbitals and the properties of electrons in orbitals
Principal Quantum Number (s) -
correct answer ✅symbolized by n, indicates the main energy
, MTL200 Midterm Exam Questions &
Answers (Grade A+)
level/shell occupied by the electron. N is the row in the periodic
table
Secondary Quantum Number -
correct 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 -
correct answer ✅The electrons in the outermost shell, which
participate in the bonding between atoms.
Pauli Exclusion Principle -
correct answer ✅An atomic orbital may describe at most two
electrons, each with opposite spin direction
Bonding Energy -
correct answer ✅The energy required to separate two atoms that
are chemically bonded to each other to an infinite distance
Answers (Grade A+)
What are the three primary material eras? -
correct answer ✅Stone Age, Bronze Age, Iron Age
What are the four levels of Material Structures? -
correct answer ✅Subatomic Structures, Atomic Structures, Micro
structures, Macro structures
What are the three basic materials? -
correct answer ✅Metals, Ceramics and Polymers
Advanced Materials -
correct answer ✅semiconductors, biomaterials, smart materials,
nanomaterials
atomic number -
correct answer ✅the number of protons in the nucleus of an
atom, usually equals the number of neutrons
Isotope -
correct answer ✅Atoms of the same element that have different
numbers of neutrons
,MTL200 Midterm Exam Questions &
Answers (Grade A+)
formula for atomic mass -
correct answer ✅Atomic Number + Neutrons
mole -
correct answer ✅the SI base unit used to measure the amount of a
substance 6.022 x 10^23
Bohr's Atomic Model -
correct 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] -
correct answer ✅Modern model of the atom, atoms have
electrons in "orbitals" that are like clouds around the nucleus
Quantum Numbers -
correct answer ✅A set of four numbers that specify the properties
of atomic orbitals and the properties of electrons in orbitals
Principal Quantum Number (s) -
correct answer ✅symbolized by n, indicates the main energy
, MTL200 Midterm Exam Questions &
Answers (Grade A+)
level/shell occupied by the electron. N is the row in the periodic
table
Secondary Quantum Number -
correct 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 -
correct answer ✅The electrons in the outermost shell, which
participate in the bonding between atoms.
Pauli Exclusion Principle -
correct answer ✅An atomic orbital may describe at most two
electrons, each with opposite spin direction
Bonding Energy -
correct answer ✅The energy required to separate two atoms that
are chemically bonded to each other to an infinite distance
