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Ch. 13 Chemical Bond

TermDefinition
Chemical Bonding the combining of atoms to form molecules or ironic compounds
Chemical Bond An interaction that holds atoms or ions together
Valence electron an electron that is found in the outermost shell of an atom and that determines the atom's chemical properties
Ionic Bond A bond that forms when eletrons are transferred from one atom to another, which results in a posistive ion and a negative ion
ion a charged particle that forms when an atom or group of atoms gains or loses one or more electrons
Crystal Lattice The regular pattern in which a crystal is arranged
Convalent Bond A bond formed when atoms share one or more pairs of electrons
Molecule the smallest unit of substance that keeps all of the physical and chemical properties of that substance
Metallic Bond A bond formed by the attraction between positively charged metal ions and the electrons around them
Which of the following substances results from combining atoms of carhbon, hydrogen, and oxygen? Suger
Which of the following is not true about electrons when chemical bonds form? Electron are destroyed
An explanation of a phenomenon that is based on observation, experimentation, and reasoning is a theory
People can use _________ to discuss theories of how and why atons form bonds. Model
How can you determine the number of electrons in an atom? Atomic number
How many valence electrons are in an oxygen atom ? 6
What do elements within a group number have the same number of? Valence electrons
An electron in the outermost energy level valence electrons
number of protrons in an atom atomic number
family on the periodic table to which an element belong group
Which electrons in an atom make chemical bonds? Why? Most atoms form bonds using only the electrons because the electrons are in the outermost.
How can the periodic table help you determine the number of valence electrons for atoms? To determine the number of valence electrons for atoms
What determines whether an atom will form bonds? Number of valence electrons
Which group on the periodic table contains elements that do not normally form chemical Group 18
The outermost energy level of an atom is considered full if the level contains ______ electrons 8
Helium atoms only need _____ valence electrons to have a filled outermost energy level 2
Which is more likely to form bonds, an atom with 8 valence electrons or an atom with less than 8 valence? An atom with 8 valence electrons will be more likely to form bonds
A chemical bond that forms when electrons are transferred from one atom to another is an ironic bond
Charged particles that form when atoms gain or lose electrons are Ions
A transfer of electrons between atoms changes the number of electrons in an atom,but the _______ number of stays the same Protons
Why is an atom neutral? An atom is neutral becasue the number of electrons is an atom equals the number of protons
When atoms lose electrons throught an ionic bond, they become positively charged
Most metals have few ___________ _________ and form positive ions Valence Electrons
If a sodium atom loses its only valce electron to another atom, the sodium atom becomes a sodium ___________ ion
A sodium ion has a charge of protons
The chemical symbol for a sodium ion is Na
When electrons pull away from atoms, ________ is needed energy
Where does the energy needed to take electrons from metals come from? Negative charged
Some atoms gain electrons during chemical changes and have a Negative Charge
The symbol for oxide is O2-. How many electrons did the oxygen atom gain?2 2
What ending is used for the names of negative ions? -ide
Atoms of Group _______ electrons give off the most energy when they gain an electron 17
When is energy given off by most nonmetals? When an ionic bond forms between a metal and a nonmetal
When ions bond, they form a repeating three-dimensional patterned Crystal lattice
Created by: ilovelucy21
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