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Polar Covalent Bonding
Test Description: Review electronegativity and polar covalent bonding
Instructions: Answer all questions to get your test result.
1) What is electronegativity?
A
How strongly an atom repels (pushes away) electrons
B
How strongly an atom pulls (attracts) electrons
C
How big an atom is
D
How much energy it takes to pull two atoms apart when they are held together by a covalent bond
2) What does it mean for a molecule to be POLAR?
A
The molecule has an overall charge
B
The molecule has different partial charges on each side but its overall charge is still neutral
C
The molecule has the same atoms on each side
D
The molecule is made of metals bonded to nonmetals
3) What is a molecule?
A
Two or more atoms held together by an ionic bond
B
Compounds that form of only one type of atom
C
Two or more atoms held together by a covalent bond
D
Two or more atoms held together by a metallic bond
4) Which atom is MORE electronegative?
A
S
B
H
C
C
D
F
5) Which of these molecules will be POLAR?
A
F2
B
H2
C
HF
D
O2
6) Which of these molecules will be NON-POLAR?
A
HF
B
HBr
C
Br2
D
CCl4
7) What happens to the electrons in a POLAR covalent bond?
A
The electrons are shared EQUALLY
B
The electrons are pulled closer to the LESS ELECTRONEGATIVE atom
C
The electrons are pulled closer to the MORE ELECTRONEGATIVE atom
D
The electrons are transferred to the nonmetal
8) What happens to the electrons in a POLAR covalent bond?
A
The electrons are shared UNEQUALLY
B
The electrons are stolen by the metal to form a cation
C
The electrons are shared EQUALLY
D
The electrons are stolen by the metal to form an anion
9) What happens to the electrons in a NON-POLAR covalent bond?
A
The electrons are shared UNEQUALLY
B
The electrons are pulled closer to the LESS ELECTRONEGATIVE atom
C
The electrons are shared EQUALLY
D
The electrons are pulled closer to the MORE ELECTRONEGATIVE atom
10) Which of the following atoms are the MOST electronegative?
A
Alkali Metals Only
B
Halogens Only
C
F, Cl, Br, O, N
D
Transition Metals
*select an answer for all questions
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