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Question: question 1 what is the charge on an ion that...

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QUESTION 1

  1. What is the charge on an ion that contains 27 protons, 32 neutrons, and 24 electrons?

     

    3-

     

    2-

     

    1-

     

    3+

     

    2+

     

    1+

 

 

QUESTION 2

  1. Which of the following elements are spelled incorrectly? (There may be more than one).

     

     

     

    sulfer

     

    antimony

     

    potasium

     

    barium

 

 

 

QUESTION 3

  1. Identify each of the following compounds as ionic or molecular.

    Ag3PO4

    Cl2O

    MnF2

    A.

    molecular compound

    B.

    ionic compound

 

QUESTION 4

  1. Match the following formulas to the correct type of bonding: ionic or covalent.

    LiF

    PF3

    KI

    SF6

    CaS

    A.

    covalent

    B.

    ionic

 

 

 

QUESTION 6

  1. For the bonds listed below, choose the one in which the highlighted atom is the partially positive end of the bond. (Try to predict electronegativity differences based on positions of the bonded atoms in the periodic table.)

     

    Br

     

    N

     

    C O

     

    C S

 

QUESTION 7

  1. From the bonds listed below, choose the one that is the most polar. (Try to predict electronegativity differences based on positions of the bonded atoms in the periodic table.)

     

    N-F

     

    Cl-O

     

    As-F

     

    P-Cl

 

QUESTION 8

  1. For which of the following substances will strong hydrogen bonds form between the molecules? (You may select more than one.)

     

    CH3-CH(OH)-CH3

     

    C2H6

     

    CO

     

    H2CO3

     

    CHCl3

 

QUESTION 9

  1. The reaction CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) +H2O(l) is an example of a(n)....

     

    decomposition reaction

     

    acid carbonate reaction

     

    exchange reaction

     

    combination reaction

 

QUESTION 10

  1. Predict the product(s) of the following double displacement reaction carried out in aqueous solution:

    Pb(NO3)2(aq) + K2CrO4(aq)  

     

    Pb + 5O2 + N2 + 2K + Cr

     

    Pb(NO3)2K2CrO4

     

    PbKNO3 + CrO4

     

    PbCrO4 + 2KNO3

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