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MTL 200 Questions and Correct Answers/
Latest Update / Already Graded
6 properties of a solid material
Ans: 1)Mechanical
2)Electrical
3)Thermal
4)Magnetic
5)Optical
6)Deterioration (chemical reaction)
Classification of Metals (5 types)
Ans: 1)Composed of at least 1 metallic element
2)Atoms arranged orderly
3)Relatively Dense
4)Relatively Stiff and Strong
5)Good conductors of heat and electricity
Classification of Ceramics (4 types)
Ans: 1) Compounds between metallic and nonmetallic
elements
2) Commonly (oxides, nitrides, carbides)
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3) Relatively stiff and strong
4)Very brittle (high susceptibility to fractures)
Classification of Polymers (6 types)
Ans: 1)The family of plastic and rubbers
2)Large molecular structures
3)Can be ductile/pliable
4)Known to soften/decompose over time
5)Low electric conductivity
6)Nonmegnetic
Classification of Composites (2 types)
Ans: 1)Come from 2 or more types of material (metals,
ceramics, polymers)
2)Designed to achieve multiple properties
Semiconductors
Ans: Both an insulator and a conductor
Electrons in Atoms
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Ans: Electrons only have specific values of energy, if energy
levels change, electrons must make a quantum jump
How do electrons quantum jump? (2 points)
Ans: 1)Either by absorbing energy and moving up
2)Or by releasing energy and moving down
Quantum Numbers (4 parameters to describe e)
Ans: 1)Size
2)Shape
3)Spatial orientation
4)Probability density
Principle Quantum Number 1 (shell letter, and sub-shell)
Ans: Shell letter K
Sub-shell S
Principle Quantum Number 2 (shell letter, and sub-shell)
Ans: Shell letter L
Sub-shell s,p
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Principle Quantum Number 3 (shell letter, and sub-shell)
Ans: Shell letter M
Sub-shell s,p,d
Principle Quantum Number 4 (shell letter, and sub-shell)
Ans: Shell letter N
Sub-shell s,p,d,f
Electron Spin Movement
Ans: +1/2, -1/2
Ground State
Ans: electrons occupy all the lowest energy states
Hydrogen ground state
Ans: 1s^1
Helium
All rights reserved © 2025/ 2026 |
MTL 200 Questions and Correct Answers/
Latest Update / Already Graded
6 properties of a solid material
Ans: 1)Mechanical
2)Electrical
3)Thermal
4)Magnetic
5)Optical
6)Deterioration (chemical reaction)
Classification of Metals (5 types)
Ans: 1)Composed of at least 1 metallic element
2)Atoms arranged orderly
3)Relatively Dense
4)Relatively Stiff and Strong
5)Good conductors of heat and electricity
Classification of Ceramics (4 types)
Ans: 1) Compounds between metallic and nonmetallic
elements
2) Commonly (oxides, nitrides, carbides)
All rights reserved © 2025/ 2026 |
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3) Relatively stiff and strong
4)Very brittle (high susceptibility to fractures)
Classification of Polymers (6 types)
Ans: 1)The family of plastic and rubbers
2)Large molecular structures
3)Can be ductile/pliable
4)Known to soften/decompose over time
5)Low electric conductivity
6)Nonmegnetic
Classification of Composites (2 types)
Ans: 1)Come from 2 or more types of material (metals,
ceramics, polymers)
2)Designed to achieve multiple properties
Semiconductors
Ans: Both an insulator and a conductor
Electrons in Atoms
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Ans: Electrons only have specific values of energy, if energy
levels change, electrons must make a quantum jump
How do electrons quantum jump? (2 points)
Ans: 1)Either by absorbing energy and moving up
2)Or by releasing energy and moving down
Quantum Numbers (4 parameters to describe e)
Ans: 1)Size
2)Shape
3)Spatial orientation
4)Probability density
Principle Quantum Number 1 (shell letter, and sub-shell)
Ans: Shell letter K
Sub-shell S
Principle Quantum Number 2 (shell letter, and sub-shell)
Ans: Shell letter L
Sub-shell s,p
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Principle Quantum Number 3 (shell letter, and sub-shell)
Ans: Shell letter M
Sub-shell s,p,d
Principle Quantum Number 4 (shell letter, and sub-shell)
Ans: Shell letter N
Sub-shell s,p,d,f
Electron Spin Movement
Ans: +1/2, -1/2
Ground State
Ans: electrons occupy all the lowest energy states
Hydrogen ground state
Ans: 1s^1
Helium
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