Chemical Bonding Question Preview (ID: 38878)


CYB Chemsitry Test 2 Material. TEACHERS: click here for quick copy question ID numbers.

Which of the following pairs of elements can be joined by a covalent bond?
a) N and C
b) Na and C
c) Mg and C
d) Li and Cl

Which of the following covalent bonds is the most polar? Remember polar means one atom will pull the electrons to its side more. Kind of like tug of war
a) C – C
b) C – H
c) H-Cl
d) N-N

A diatomic ( 2 atom ) molecule with a triple covalent bond is _____.
a) N2
b) H2
c) F2
d) O2

Which of the following diatomic ( 2 atom) molecules is joined by a DOUBLE covalent bond?
a) O2
b) Cl2
c) N2
d) H2

A molecule with a single covalent bond is _____.
a) N2
b) CO
c) CO2
d) Cl2

How do atoms achieve noble-gas electron configurations in single covalent bonds?
a) Two atoms share two electrons.
b) Two atoms share two pairs of electrons.
c) Two atoms share one electron.
d) One atom completely loses two electrons to the other atom in the bond.

Why do atoms share electrons in covalent bonds?
a) to attain a noble-gas electron configuration
b) to become ions and attract each other
c) to become more polar
d) to increase their atomic numbers

How many electrons are shared in a single covalent bond?
a) 1 pair
b) 2 pairs
c) 3 pairs
d) 4 pairs

How many electrons are shared in a double covalent bond?
a) 1 pair
b) 2 pairs
c) 3 pairs
d) 4 pairs

Aluminum oxide, Al2O3, is produced by combining Al3+ and O2- particles. What type of compound has been formed?
a) ionic
b) covalent
c) metallic
d) hydrogen

Which type of bond is responsible for atoms of pure gold to be bonded togther?
a) metallic
b) covalent
c) ionic
d) hydrogen

The valence shell of a neutral atom loses two electrons. Which of the following ions might result?
a) O2-
b) K+
c) N2-
d) Mg2+

Which of the following elements is a nonmetal?
a) Li
b) Ba
c) Mn
d) Se

Which of the following sets of atoms can be joined by a COVALENT BOND?
a) S and F
b) Na and Cl
c) Be and F
d) Mg and Na

An ionic compound is ________.
a) composed of anions and cations
b) held together by ionic bonds
c) Composed of metals and non-metals
d) all of the above

What statement is true
a) cations are positive and anions are negative
b) cations are negative and anions are positive
c) cations are positive and anions are neutral
d) cations are neutral and anions are negative

What is the total number of covalent bonds normally associated with a single carbon atom in a compound? Translation: how many bonds does carbon make?
a) 1
b) 2
c) 3
d) 4

Which of the following pairs of elements is most likely to form an ionic compound?
a) magnesium and chlorine
b) magnesium and sodium
c) nitrogen and sulfur
d) carbon and fluorine

If the atoms that share electrons have an unequal attraction for the electrons, the bond is called
a) polar
b) non polar
c) ionic
d) dipolar

Multiple covalent bonds may occur in atoms that contain carbon, nitrogen, or
a) Lithium
b) Hydrogen
c) Helium
d) Oxygen

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