Bohr Model vs Quantum Model of Atom Quiz

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What is the process called when a valence electron is lost from an atom?

Valencization

Ionization (correct)

Neutralization

Atomization

What happens when a free electron collides with an atom and is captured?

Ionization occurs

The atom becomes a positive ion

The atom becomes a conductor

The atom becomes a negative ion (correct)

What is the term for a positively charged atom that has lost a valence electron?

Valence atom

Negative ion

Positive ion (correct)

Free electron

Which model of an atom is considered more accurate than the Bohr model?

Quantum model Signup and view all the answers

How are atoms arranged within crystalline materials?

In symmetrical patterns Signup and view all the answers

What type of bond holds atoms together within a crystal structure?

Covalent bonds Signup and view all the answers

What is the Bohr model often referred to as?

Planetary model Signup and view all the answers

What does the nucleus of an atom consist of according to the Bohr model?

Protons and neutrons Signup and view all the answers

Which model of the atom is considered a more accurate representation than the Bohr model?

Quantum model Signup and view all the answers

In the Bohr model, what surrounds the central nucleus of an atom?

Electrons Signup and view all the answers

Which element has the simplest atom with one proton and one electron?

Hydrogen Signup and view all the answers

What distinguishes each type of atom from all other elements?

Number of protons Signup and view all the answers

How many valence electrons does a carbon atom have?

Four Signup and view all the answers

What is the term used for a material that does not conduct electrical current under normal conditions?

Insulator Signup and view all the answers

Which of the following is NOT an example of an insulator?

Silver Signup and view all the answers

What determines the ability of a material to conduct electrical current?

Valence electrons and their binding strength Signup and view all the answers

What is the primary characteristic of a good conductor?

Easily conducts electrical current Signup and view all the answers

What contributes to the electrical properties of a material according to the text?

Valence shell configuration Signup and view all the answers

What does the atomic number of an element represent?

Number of protons in the nucleus Signup and view all the answers

In a neutral atom, how does the number of electrons compare to the number of protons?

Equal Signup and view all the answers

What corresponds to a certain energy level in an atom?

Discrete distance from the nucleus Signup and view all the answers

How are energy levels in an atom grouped?

Shells Signup and view all the answers

Which shell is the closest to the nucleus in an atom?

Shell 1 Signup and view all the answers

What determines the maximum number of electrons that can exist in each shell of an atom?

$2n^2$ Signup and view all the answers

What happens to an electron in the conduction band?

It is free to move throughout the material. Signup and view all the answers

What is the band gap related to in quantum theory?

Energy levels Signup and view all the answers

Why does silicon have an advantage over germanium as a semiconductor?

Silicon valence electrons are closer to the nucleus. Signup and view all the answers

What type of bond do silicon atoms form to create a crystal?

Covalent bond Signup and view all the answers

How does the location of valence electrons affect the stability of materials?

Closer to the nucleus increases stability. Signup and view all the answers

Why does excessive reverse current occur in materials with valence electrons at higher energy levels?

Higher energy levels require more energy to escape from the atom. Signup and view all the answers