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The intermolecular attractions between H2O molecules are a. Dispersion forces c. Hydrogen bond b. dipole interactions d. metallic bond
hydrogen bond
Molecular substances tend to melt and boil at ____________temperatures than ionic compounds or metals a. higher c. lower b. larger d. same
lower
____________ are intermolecular attractions between oppositely charged regions of polar molecules. a. dipole interactions c. hydrogen bond b. dispersion forces d. covalent bond
dipole interactions
__________ is a measure of how easily a liquid evaporates. a. electronegativity c. ionization energy b. electron affinity d. volatility
volatility
The weakest types of attraction between molecules, including dispersion forces and dipole interactions are called _____________ a. covalent bond c. metallic bond b. ionic bond d. Van der Waals force
Vander Waals
Hydrogen bonds are the ________ of all the intermolecular forces a. strongest c. most stable b. lowest d. all of the above
strongest
The stronger the intermolecular forces, the _______ volatility. a. Higher c. Same b. lower d. None of the above
lower
____________ are intermolecular forces in which hydrogen is covalently bonded to a very electronegative atom. a. Van der Waals forces c. Hydrogen bonds b. Dispersion forces d. Dipole interaction
hydrogen bond
The weakest of all molecular interactions is ______________ a. Hydrogen bond c. Dispersion force b. Ionic bond d. Metallic bond
dispersion forces
The molecules made up of three atoms have a bent or linear shape, this depends on the molecule’s______________ a. polarity c. electron affinity b. electronegativity d. Ionization energ
polarity
The number of electrons needed to apply the octet rule a. Valence electrons – core electrons c. 8- core electrons b. Valence electrons – needed electrons d. 8 –valence electrons
8-valence electrons
A _______________bond is a bond in which the electrons are shared equally a. polar covalent c. ionic b. non polar covalent d. metallic
non polar
identify the molecule by which its geometry cancels out the polarity of different bonds to make the molecule nonpolar. a. SCl2 c. CO2 b. H2O d. H2
CO2
Identify whether the compound Br2 is polar, nonpolar, or ionic Notice that the electronegativity trends for the elements are: Br: 2.96 a. polar c. ionic b. non-polar d. all of the above
non polar
Identify whether the CO compound is polar, nonpolar, or ionic Notice that the electronegativity trends for the elements are: C: 2.55 O: 3.44 a. polar c. ionic b. non polar d. all of the above
polar
A _________ ________bond is a bond in which electrons are shared but not shared equally between the atoms a. polar covalent c. ionic b. non polar covalent d. non of the above
polar
