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Review for Final Exam - 1

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					                         Review for Final Exam – 1
The final exam will take place on Tuesday and Wednesday June 9 & 10. The
exam will include questions from topics that were covered during the 3 rd and 4th
marking periods. The exam will be in TWO parts with 15 questions per part.

1) Atoms that have a completed (filled) outer shell of electrons _____ have completed (filled) inner shells
of electrons. A) hardly ever B) never C) sometimes D) usually E) always

2) The Octet Rule applies only to the outer _____ of electrons in an atom. A) s sub-shell         B) p sub-
shell C) d sub-shell D) s and p sub-shells E) s, p, and d sub-shells

3) When an atom of a neutral metallic element becomes an ion, the atom _____ an electron to become
a(n) _____ .
A) loses      cation
B) loses      anion
C) gains      cation
D) gains      anion
E) loses      negative

4) When an atom of a neutral non-metallic element becomes an ion, the atom _____ an electron to
become a(n) _____ .
A) loses      cation
B) loses      anion
C) gains      cation
D) gains      anion
E) gains      positive

5) The valence electron(s) of an atom is/are the _____ electron(s) in the atom. A) outer      B) inner   C)
core D) nuclear E) transparent
                                                         2
6) A neutral atom with the electron configuration [Kr] 5s has _____ valence electrons. A) 1       B) 2   C)
18 D) 10 E) 0
                                                             2   10     5
7) A neutral atom with the electron configuration [Kr] 5s 4d          5p has _____ valence electrons. A) 17
B) 15 C) 2 D) 12 E) 7

8) TRUE or FALSE: When a chlorine atom (atomic number 17) gains an electron to become a chloride
ion, its outer electron structure is the same as the outer electron structure of a neutral argon atom. Since
argon is a Noble Gas, it is to be expected that a chloride ion would be very UNreactive.

9) Which of the following are ways that a neutral atom can become an ion?
   i) gain or lose one or more electrons
   ii) gain or lose one or more protons
   iii) gain or lose one or more neutrons
A) i, ii, and iii B) i and ii only C) i and iii only D) ii and iii only E) i only

10) A cation has a _____ charge.



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11) An anion has a _____ charge.
                                               2   2   4
12) An atom with the electron configuration 1s 2s 2p will most easily form a(n) ___ion with a charge of ___ .
                                                                                 a                        b


                                               2   2   1
13) An atom with the electron configuration 1s 2s 2p will most easily form a(n) ___ion with a charge of ___ .
                                                                                  a                      b



                     +1
14) A sodium ion (Na ) has:
     i) the same number of protons as a neutral sodium atom
     ii) the same number of neutrons as a neutral sodium atom
     iii) the same number of electrons as a neutral sodium atom
     iv) the same properties as a neutral sodium atom
A) i, ii, iii, and iv B) i and ii only C) i, ii, and iv only D) ii and iv only   E) i only
                                               2   2       6   2   6
15) An atom with the electron configuration 1s 2s 2p 3s 3p would be expected to be _____ .
A) highly reactive forming a huge number of compounds         B) reactive but not highly reactive but still
forming a large number of compounds        C) somewhat reactive and forming many compounds         D) not
very reactive forming only 10 to 20 compounds E) highly UNreactive forming few, if any, compounds

16) Which group(s) of elements have easy-to-predict reactivities based on their electron configuration?
   i) alkali metals
   ii) alkaline earth metals
   iii) halogens
   iv) noble gases
   v) transition metals/elements
A) i, ii, iii, iv, and v B) i, ii, and iii only C) i, ii, iii, and iv only D) i and ii only E) i only
                                                                                                 +1
17) TRUE or FALSE: It requires more energy to remove an electron from a sodium ion (Na ) than it
                                                         0
does to remove an electron from a neutral sodium atom (Na ).

18) TRUE or FALSE: The halogen elements are highly reactive because they are non-metals with a
relatively high high/strong attractions for electrons.

19) The “size” (“radius”) of the alkali metals (increase/decrease/remain the same) as the atomic number
of these elements increases.

20) TRUE or FALSE: Ionic bonds are distinguished from a covalent bond because ionic bonds involve
the actual transfer of electrons from one atom to another (with the formation of ions) while covalent bonds
involve a sharing of electrons (without the formation of ions).

21) In general, ionic bonds are formed between a metal and a(n): A) metal   B) non-metal      C)
diatomic molecule     D) noble gas atom    E) atom in Group I or II in the Periodic Table of the
Elements

22) In general, covalent bonds are formed between a non-metal and a(n): A) metal     B) non-metal
C) diatomic molecule    D) noble gas atom    E) atom in Group I or II in the Periodic Table of the
Elements

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23) TRUE or FALSE: It is NOT possible to make a general statement comparing the strengths of all ionic
bonds and all covalent bonds.

24) Determine the formula of each ionic compound based on the charges of the ions listed:

   ion name                    ion formula                       ion charge
                                  -1
   chloride                    Cℓ                                -1
                                   -1
   fluoride                    F                                 -1
                                         -1
   nitrate                     NO3                               -1
                                             -1
   chlorate                    CℓO3                              -1
                                   -2
   sulfide                     S                                 -2
                                         -2
   sulfate                     SO4                               -2
                                         -2
   carbonate                   CO3                               -2
                                             -2
   chromate                    CrO4                              -2
                                         -3
   phosphate                   PO4                               -3
                                        +1
   sodium                      Na                                +1
                                         +1
   ammonium                    NH4                               +1
                                        +2
   magnesium                   Mg                                +2
                                    +3
   aluminum                    Aℓ                                +3


   a) sodium chloride

   b) magnesium nitrate

   c) aluminum sulfide

   d) magnesium fluoride

   e) sodium carbonate

   f) aluminum phosphate

   g) magnesium phosphate

   h) sodium sulfide

   i) sodium sulfate

   j) aluminum chlorate


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   k) magnesium chromate

   ℓ) aluminum sulfate

   m) ammonium phosphate



                                         SOLUTIONS
1) E                                                 24 a)   NaCℓ

2) D                                                 24 b)   Mg(NO3)2

3) A                                                 24 c)   Aℓ2S3

4) D                                                 24 d)   MgF2

5) A                                                 24 e)   Na2CO3

6) B                                                 24 f)   AℓPO4

7) E                                                 24 g)   Mg3(PO4)2

8) FALSE                                             24 h)   Na2S

9) E                                                 24 i)   Na2SO4

10) positive                                         24 j)   Aℓ(CℓO3)3

11) negative                                         24 k)   MgCrO4

12) type: an or negative    charge: -2               24 ℓ)   Aℓ2(SO4)3

13) type: cat or positive   charge: +3               24 m) (NH4)3PO4

14) B

15) E

16) C

17) TRUE

18) TRUE

19) increase

20) TRUE

21) B

22) B

23) TRUE

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