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BJ Chem Ch 6 Bonds

BJ Chem Ch 6 Chemical Bonds

QuestionAnswer
The rule where atoms maximize stability by attaining a full valence shell (generally 8 electrons) octet
Type of bond which shares electrons covalent
Type of bond where a transfer of electrons occurs and then an electrostatic attraction ionic
Type of bond where delocalized electrons move through a "sea" metallic
Bond formed with a metal and metal metallic
Bond formed with two nonmetals covalent
Bond formed with a metal and nonmetal ionic
Tendency of an object to form two localized regions of opposite character. polarity
Choose: A sodium atom will (lose/gain) one electron to become a cation. lose
Choose: A chlorine atom will (lose/gain) one electron to become an anion. gain
Chemists use which lower case letter to identify polarity delta
Measure of an atom's ability to attract electrons to itself in a chemical bond electronegativity
Most electronegative element flourine
Name of man who created an electronegativity scale. Linus Pauling
The bond type between sodium and chloride. ionic
The bond type between carbon and hydrogen covalent
The bond type between copper and zinc (which makes the alloy brass) metallic
H-H is an example of a homonuclear _______ molecule. diatomic
Electronegativity differences of over 1.7 units generally result in a ________ bond. ionic
If the element with a higher electronegativity is less than 2.2, then the bond is ________. metallic
If the higher electronegativity is 2.2 or greater, then the element with the lower electronegativity determines the bond type. If it is also 1.7 or greater, then the bond type is __________. covalent
Two dimensional diagrams that show the bonds between different atoms Lewis structures
In a Lewis structure a ________ represents two electrons. dash
The number of valence electrons for nonmetals (except hydrogen) can be predicted by the formula: valence e = group number - 10. So, flourine (group 17 or 7A) would have ____ valence electrons. 7
(T or F) Hydrogen can be used as the central atom ina polyatomic molecule. False
Atoms with valence structures similar to Group __ atoms are more likely to be the central atom in a polyatomic molecule. 14
The central atom in a molecule is generally the one with the most (paired/unpaired) electrons. unpaired
The type of forces which hold covalently bonded atoms together. Electrostatic forces
Which seven elements generally occur as diatomic, covalent molecules? H,N,O,F,Cl,Br,I
Ionic compounds are represented by ________ units and do not contain distinct molecules. formula
Formula unit for Mg and Br MgBr2
elements or compounds covalently bonded into a continuous three-dimensional networks (like SiO2, diamond) are called ______ covalent substances network
The type of bond which forms weaker intermolecular forces between molecules. covalent
In their solid state, most ionic solids are (poor/good) conductors of electricity. poor
What atoms do to attain the low-energy stable electron configurations of the noble gases. bond
_____ bonds share electrons among many atoms. metalic
_____ compounds generally form solid crystalline substances with high melting points. ionic
____ compounds consist of crystal lattics ionic
_____ compounds tend to be gases, liquids, soft solids, or brittle and crumbly solids. covalent
Adjective meaning "many atoms" polyatomic
(T/F) There is no purely covalent bond. False
(T/F) There is no purely ionic bond. True
Chemical bonds between atoms involve the rearrangine of _____ to maximize stability electrons
Draw the Lewis structure for HCN. The N has __ nonbonding electrons. two
Draw the Lewis structure for ammonia, NH3. The N has __ nonbonding electrons. two
Draw the Lewis structure for H2S. The S has ___ nonbonding electrons. four
Created by: MArCHChemBJ
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