37 Questions
What contributes to the electrical properties of a material, including its ability to conduct electrical current?
Electron shells
Which atomic particle is positively charged?
Protons
What type of material is known as a conductor?
Material that easily conducts electricity
What determines a material's conductivity?
Willingness to share electrons
Which part of an atom contains both protons and neutrons?
Nucleus
What is the name of copper with two additional positive charges?
Cupric ion
What is the characteristic of noble gases under normal conditions?
They contain the maximum number of valence electrons.
What practical application uses ionisation and neon gas to produce light?
Neon lighting
Which type of bond joins metals to nonmetals in a molecule?
Ionic bond
What does a molecule consist of?
Two or more atoms bonded together
What is the maximum number of electrons the third electron shell can hold?
18
In an atom, which shell forms the valence band?
Fourth shell
What determines whether or not an atom's electrons will flow easily?
Valence shell
What is the net charge of a balanced atom?
0
In aviation, which aspect of electron theory is focused on for conduction and current flow?
Atomic valence shell
What subatomic particles make atoms differ from one another?
Protons, electrons, and neutrons
What is the role of the valence band in an atom?
It contains the valence electrons and forms the conduction band
What is the function of the conduction band in an atom?
It allows a valence electron to become a free electron and conduct electricity
What is the difference in energy called between the valence band and the conduction band?
Energy gap
What is the main factor that determines whether an atom is in a balanced state?
The number of protons and electrons are equal
What is the electrical nature of conductors?
They have a loosely bound outer electron shell and are good conductors of electricity
What defines the molecular structure and nature of insulators?
Tightly bound outer electron shell, restricting movement of electrons
What is the electrical nature of molecules?
They have a tightly bound outer electron shell, making them poor conductors
What does the symbol 'R' represent in the context of electrical fundamentals?
Resistance
What factors control the resistance of an object?
Material, length, and temperature
What is the relationship described by Ohm's law?
V = IR
What is the unit for the measurement of a material's ability to conduct current?
Siemens
What is the reciprocal of resistance?
Conductance
Which type of material can range between both a conductor and an insulator?
Semiconductor
How many electron shells can some atoms have?
Seven
Where are the electrons with the least amount of energy located?
Closest to the nucleus
What is the outermost shell of an atom known as?
Valence shell
How are the electrons in the outermost shell held by the nucleus?
Weakly
Which electron shell possesses electrons with the greatest amount of energy?
"N" shell
What do we call the electrons that are further away from the nucleus?
"Loosely bound" electrons
How many letters represent the first four electron shells?
"K", "L", "M", "N"
Which term is commonly used interchangeably with 'electron shells'?
"Energy levels"
Learn about the energy levels and electron shell capacities in an atom. Understand how each shell can only hold a certain number of electrons, and the rules that dictate the total number of electrons a shell can hold. This is essential knowledge for understanding atomic structure and chemistry.
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