Chapter 4 Chem Test
Who Created the Planetary Model?
JJ Thomson
Democritus
Niels Bohr
Albert Einstein
What is Electron Configuration?
The arrangement of electrons and protons
The arrangement of electrons and neutrons inside the nucleus
The arrangement of electrons relative to protons
The arrangement of electrons within orbitals
The arrangement of protons within orbitals
In the electron configuration 3S'1, the 3 is what?
Number of electrons in the sublevel
Quantum number
The sublevel where the elctrons are located
What is a Quantum number?
The number of electrons in a sublevel
The sublevel where electrons are located
The value of main energy level
In the electron configuration 3s'1, the S is what?
The Quantum letter
The sublevel where electrons are located
The level where protons are located
In the electron configuration 3s'1, the 1 is what?
Number of electrons in the sublevel
The Quantum number
The sublevel position of electrons
The value of main energy level
In an electron configuration, inner electrons can be represented by using the configuration of what?
Alkali metals
Metals
Noble Gases
Nonmetals
In a shell model, the numbering of the shells begins with the one _________ to the nucleus.
Closest to
Furthest from
The seven possible shells in an atom correspond to the seven ______ of the periodic table.
Groups
Periods
Noble Gases
Atoms in the same group have....
Same number of electrons
Different number of electrons
Same arrangement
Different arrangement
Atoms in the same period have....
Same number of electrons
Same arrangement
Same number of main energy levels
Shells are often referred to as....
Energy Levels
Periodic Levels
Electron Shell
A gradual change in a property as one moves across the periodic table is called a....
Group Trend
Periodic Trend
Trend
Energy Level Trend
Electrons from inner shells of atoms ______ the electrons of the outer shell
Attract
Repel
The pull of the positive nucleus on outer electrons is....
Diminished
Intensified
Electrons of the outer shell of large atoms are more ______ held than those of small atoms.
Loosely
Tightly
Electrons of the outer shell of small atoms are more ______ held than those of larger atoms.
Loosely
Tightly
Going across a period the atoms become _________.
Larger
Smaller
Why do atoms become smaller going across a period?
The number of protons in the nucleus is increasing, and main energy level stays the same
The number of protons in the nucleus is decreasing, and the number of main energy levels stays the same
The number of protons in the nucleus stays the same, and the number of main energy levels increases
Going across a period, electrons are pulled _______ strongly inward by the nucleus.
Less
More
Going down a group, atoms become _________.
Smaller
Larger
Going down a group a main energy level is being ______.
Added
Removed
Because atoms going down a group get _______, electrons are more _______ held.
Larger, tightly
Smaller, tightly
Larger, loosely
Smaller, loosely
What is ionization energy?
Amount of energy needed to pull an electron away from an atom
Amount of energy needed to pull an electron closer to an atom
Amount of energy needed to pull an electron closer to the nucleus
Elements to the right of the periodic table have the __________ ionization.
Highest
Lowest
Elements to the right of the periodic table have.....
Increased positive charges of the nuclei
Decreased positive charges of the nuclei
More positive protons pulling on negative electons
More negative electrons pulling on positive protons
Elements in the lower part of groups have the __________ ionization.
Lowest
Highest
The outermost energy level is also called _______.
Valence Shell
Electron Shell
Outer Shell
Electrons in the outermost energy level are called....
Outer electrons
Valence electrons
Last electrons
Valence electrons are indicated by dots around the symbol of an element. This notation is called...?
Electron Dot Structure
Lewis Dot Symbol
Outermost Electron Structure
Valence Electron Structure
Electron Dot Structure & Lewis Dot Symbol
Outermost Electron Structure & Lewis Dot Symbol
Except for Hydrogen and Helium, the outermost energy level is full when they have ____ electrons.
2
4
6
8
10
12
The outermost energy level electron rule is often called what?
Double rule
Octet rule
Sextet rule
Quadruple rule
Atoms are ______ when they have complete valence shells.
Stable
Unstable
Paired electrons tend to ______ chemical bonds with other atoms.
Form
Not Form
Why are atoms neutral?
Electrons and Protons are equal
Electrons and Neutrons are equal
Neutrons and Protons are equal
The Nucleus and Electrons weigh the same
When an electron is lost or gained a(n) ____ is formed.
Ion
Anion
Cation
Valence Electron
What is an Ion?
Positively charged atom
Negatively charged atom
Charged particle (positive or negative)
A positively charged ion is called what?
Anion
Ion
Cation
A negatively charge ion is called what?
Cation
Ion
Anion
A positive ion is formed when an atom ____ electrons
Loses
Gains
A negative ion is formed when an atom _____ electrons
Loses
Gains
Why do atoms lose and gain electrons?
To fill the inner most energy level
To fill the outermost shell
To chemically bond with other atoms
If the valence shell of an atom holds __ , __ , or __ electrons it will lose electrons.
5, 6, 7
4, 5, 6
1, 2, 3,
2, 3, 4
If the valence shell of an atom holds __ , __ , or __ electrons it will gain electrons
1, 2, 3
4, 5, 6
5, 6, 7
6, 7, 8
What happens if the outermost energy level looses all of it's electrons?
The inner valence shell becomes the outer shell
The atom attracts more electrons to refill the outermost energy level
An aluminum ion have a charge of 3+ was formed when the atom _____ three electrons
Gained
Lost
A Br3- ion was formed when a bromine atom _____ three electrons
Gained
Lost
If elements hold on to electrons loosely, they have a tendency to ______ electrons when forming bonds.
Lose
Gain
If elements hold on to electrons tightly, they have a tendency to _____ electrons when forming bonds.
Lose
Gain
Why to noble gases tend to neither lose nor gain electrons?
Their outer energy level is already full
They don't have any electrons in their outer level
They only have one electron
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