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1 | |
Of the three major types of bonding (ionic, covalent, metallic) which ones are based on electrostatic attractions between opposite charges?
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| | A) | only ionic bonding
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| | B) | only ionic and covalent bonding
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| | C) | only ionic and metallic bonding
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| | D) | ionic, covalent and metallic bonding
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| | E) | none of the above
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2 | |
The Lewis dot symbol for the oxide ion is
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| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif:: ::/sites/dl/free/0072396814/37547/Image8.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif:: ::/sites/dl/free/0072396814/37547/Image9.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif:: ::/sites/dl/free/0072396814/37547/Image10.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif:: ::/sites/dl/free/0072396814/37547/Image11.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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| | E) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif:: ::/sites/dl/free/0072396814/37547/Image12.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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3 | |
Which of the following is the correct formula for magnesium nitride? |
| | A) | Mg NO3 |
| | B) | Mg(NO3)2 |
| | C) | MgN |
| | D) | Mg2N3 |
| | E) | Mg3N2 |
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4 | |
The electrostatic force of attraction between two charges, A and B, is proportional to
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| | A) | (charge A) + (charge B) + (distance between the charges)2 |
| | B) | (charge A) x (charge B) x (distance between the charges)2 |
| | C) | (charge A) x (charge B) + (distance between the charges)2 |
| | D) | (charge A) x (charge B) / (distance between the charges)2 |
| | E) | (distance between the charges)2/(charge A) x (charge B)
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5 | |
Predict which of the following solids has the greatest lattice energy.
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| | A) | CsI
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| | B) | NaF
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| | C) | SrCl2 |
| | D) | KF
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| | E) | SrO
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6 | |
Ionic compounds normally conduct electricity
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| | A) | when in the solid state.
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| | B) | only when molten.
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| | C) | when in aqueous solution or molten.
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| | D) | only when in aqueous solution.
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| | E) | when a solid or in aqueous solution.
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7 | |
Order the following by decreasing bond length: C≡C, C=C, C-C
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| | A) | they are all the same
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| | B) | C≡C, C=C, C-C
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| | C) | C≡C, C-C, C=C
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| | D) | C-C, C=C, C≡C
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| | E) | C=C, C-C, C≡C
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8 | |
List the following bonds in order of decreasing strength: Br-Br, Cl-Cl, F-F, I-I.
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| | A) | F-F, Cl-Cl, I-I, Br-Br
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| | B) | F-F, Br-Br, Cl-Cl, I-I
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| | C) | I-I, Br-Br, Cl-Cl, F-F
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| | D) | F-F, Cl-Cl, Br-Br, I-I
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| | E) | I-I, Cl-Cl, Br-Br, F-F
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9 | |
Which one of the following is not characteristic of substances composed of small, covalently-bonded molecules?
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| | A) | low melting point
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| | B) | low boiling point
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| | C) | weak bonds
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| | D) | poor electrical conductor when solid
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| | E) | poor electrical conductor when molten
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10 | |
Electronegativity is a measure of
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| | A) | the energy needed to remove an electron from an atom.
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| | B) | the energy released when an electron is added to an atom.
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| | C) | the magnitude of the negative charge on an electron.
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| | D) | the attraction by an atom for electrons in a chemical bond.
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| | E) | the magnitude of the negative charge on a molecule.
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11 | |
Which of the following elements is the most electronegative?
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| | A) | C
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| | B) | Si
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| | C) | As
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| | D) | Cl
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| | E) | Sr
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12 | |
Consider an isolated H-C bond in an organic compound. Based on the electronegativities of the two elements, which of the following best describes the net charge on the carbon atom?
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| | A) | no polarization of the bond, i.e. no net charge
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| | B) | a full negative charge
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| | C) | a full positive charge
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| | D) | a partial negative charge
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| | E) | a partial positive charge
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13 | |
Which of the following lists orders the bonds from the most to the least covalent character?
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| | A) | H-C, N-H, H-O
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| | B) | H-C, H-O, N-H
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| | C) | H-O, N-H, H-C
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| | D) | N-H, H-O, H-C
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| | E) | N-H, H-C, H-O
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14 | |
Based on electronegativity trends in the periodic table, predict which of the following compounds will have the greatest % ionic character in its bonds.
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| | A) | HCl
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| | B) | CaI2 |
| | C) | CaCl2 |
| | D) | SrF2 |
| | E) | SrCl2 |
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15 | |
Which one of the following properties is not characteristic of typical metals?
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| | A) | moderately high melting point
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| | B) | high boiling point
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| | C) | brittleness
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| | D) | good electrical conductor when solid
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| | E) | good electrical conductor when molten
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