8.1 Molecular Compounds
8.2 The Nature of Covalent Bonding
8.3 Bonding Theories
8.4 Polar Bonds and Molecules
Extra
100
A _________ shows how many atoms of each element a substance contains
What is a molecular formula?
100
______ represents the covalent bonds as dashes and shows the arrangement of covalently bonded atoms.
What is a structural formula?
100
In order to explain the three-dimensional shape of molecules, scientists use________.
What is valence-shell electron-pair repulsion theory (VSEPR)?
100
True or False: An ionic compound has a bonding formation that shares electrons pairs between atoms.
What is False? An ionic compound transfers one or more electrons between atoms, while a Molecular compound shares pairs between atoms.
100
The units for bond dissociation energy are often given in _____.
What is kJ/mol
200
A _______ does not tell you about a molecule's structure
What is a molecular formula?
200
When hydrogen and oxygen share electrons they attain ________.
What is noble-gas configurations?
200
Orbital hybridization provides information about both__________
What is molecular bonding and molecular shape?
200
When polar molecules are placed between oppositely charged plates, they tend to become __________
What is oriented with respect to positive and negative plates?
200
Atoms form double or triple covalent bonds if they can attain a ___________.
What is noble gas configuration by sharing two pairs or three pairs of electrons?
300
A molecule has a ________ charge.
What is neutral?
300
When you draw the Electron Dot Structure for a hydrogen chloride molecule, hydrogen has a _________ bond with chlorine.
What is single?
300
In a covalent bond the _______ and __________ attract each other because their charges have opposite signs.
What is nuclei and electrons?
300
The diversity of physical properties among covalent compounds is mainly because of __________
What is widely varying intermolecular attractions?
400
The lowest whole-number ratio of ions in an ionic compound
What is a formula unit?
400
A covalent bond in which one atom contributes both bonding electrons is a _________.
What is a coordinate covalent bond?
400
When two s atomic orbitals form a ________ is formed.
What is a Sigma-bonding molecular orbital?
400
Th melting point of an Ionic compound is ______ and usually is above ______ degrees Celsius.
What is High and 300?
500
True or False: A molecule of sodium contains 1 sodium atom.
What is False? There is no such thing as a sodium atom. Instead, these compounds exist as collections of positively and negatively charged ions arranged in three-dimensional patterns.
500
True or False: Atomic orbitals in sigma bonding overlap more than in pi bonding.
What is True? Pi bonds tend to be weaker than sigma bonds
500
0.0-0.4 is a ________ bond. 0.4-1.0 is a ________ bond. 1.0-2.0 is a ________ bond. Anything greater than 2.0 is a ________ bond.
What is Nonpolar covalent, Moderately polar covalent, Very polar covalent, Ionic?
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