Midterm Review Packet Answer Key - East Boston High School
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6Midterm Review Packet
A NSWER KEY
01/26/2014
Multiple Choice Question
1. Which part of an atom is positively charged?
(A) proton
(B) neutron
(C) electron
(D) shells
2. Which is NOT considered matter?
(A) air
(B) lead
(C) sugar
(D) sunlight
3. The Group VIIA (7A) elements are called
(A) alkali metals
(B) alkaline earth metals
(C) noble gases
(D) halogens
4. Which of the following is a metalloid?
(A) Se
(B) Sr
(C) Si
(D) Sn
5. How many lone pairs are in a Lewis dot diagram of CH
?
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(A) 0
(B) 1
(C) 2
(D) 4
6. The correct formula for barium chloride is:
(A) BaCl
(B) BaCl
(C) Ba
Cl
(D) BaCl
2
2
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7. Which of the following will NOT form?
(A) Na
O
(B) Mg
Na
(C) NaF
(D) AlCl
2
2
3
8. The shape of an NH
molecule is
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(A) tetrahedral
(B) pyramidal
(C) bent
(D) linear
9. The shape of a molecule is determined because
(A) electron domains like to be as far apart from each other as possible
(B) electron domains like to be as close to each other as possible
(C) electron domains attract each other
o
(D) electron domains have to be at 90
angles from each other
10. In a nonpolar covalent bond, the electrons
(A) are shared equally
(B) are shared unequally
(C) are not shared at all
(D) are not involved in bonding
11. The correct way to represent a solution of copper sulfate is
(A) Cu (s)
(B) Cu (aq)
(C) CuSO
(aq)
(D) CuSO
(s)
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12. Which scientist discovered the electron and proposed the “plum pudding” model of the atom?
(A) Dalton
(B) Rutherford
(C) Bohr
(D) Thomson
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