Name:________________________________
Bonding Kabob
1. Ionic bonds are formed when
A. two nonmetals with strong nuclei (high electronegativity) share electrons.
B. two metals with weak nuclei (low electronegativity) hold loosely to their electrons
C. a metal and a nonmetal with weak and strong nuclei (weak and high
electronegativity respectively)transfer electrons from the weak to strong atom.
D. Two metals with weak nuclei (low electronegativity) share electrons
2. Show the ionic bonding for AlCl3 and NaCl – using Lewis dot structure
3.
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Explain ionic bonding and covalent bonding. In your answer include
what happens to the electron(s)
what happens to metals’ electrons
what happens to nonmetals’ electrons
the most stable state for each element in terms of number of electrons
what holds the atoms together after bonding has taken place
Ionic bonding occurs when electrons are transferred from metals to nonmetals. The most
stable state for each atom in the bond is to have 8 electrons in the outer level (2 electrons for H).
When the electrons have been transferred, the atoms are held together by the attraction for the
positive cations for the negative anions.
4. Choose the type of bonding for the examples below.
__A. the metal atom with the weaker nucleus gives up electrons to the nonmetal with the
stronger nucleus
__B. electrons form a delocalized electron cloud, a sea of electrons
__C. equal sharing of electrons
__D. electrons are loosely held and travel freely from atom to atom
__E. electrons are shared, but not equally
__F. copper metal
__G. carbon dioxide
__H. sodium chloride
__I. water
A.
B.
C.
D.
E.
F.
G.
H.
I.
ionic
metallic
nonpolar covalent
metallic
polar covalent
metallic
nonpolar covalent
ionic
polar covalent
5. Identify the bond type for substances A, B, and C from the following data. Explain why
Substance
Boiling pt
Solubility in
polar
Solubility in
non polar
Conducts in
solid state
A
B
C
800
-25
1230
no
no
yes
no
yes
no
yes
no
no
Conducts
when
dissolved in
water
yes
No
yes
A has a metallic bond. Substances with metallic bonds have high boiling points, do not dissolve in either water or nonpolar
solvents, and conduct electricity in the solid and in the molten state.
B has a covalent bond. Substances with covalent bonds have low boiling points. Many low molar mass molecules are gases at
room temperature.
They do not conduct electricity, and are not soluble in water but are soluble in nonpolar solvents.
C has an ionic bond. It has the highest boiling point, dissolves in water and does not conduct electricity as a solid, but does as a
liquid.
6. Use the properties given below to identify the type of bond for this substance as
ionic, covalent, or metallic.
 Dissolves in water.
 Conducts electricity when dissolved in water.
 Shatters when hit with a hammer.
 Dry substance did not melt when heated to a high temperature.
A. ionic
B. covalent
C. metallic
D. cannot be identified from given information
Substances with covalent bonds do not dissolve in water, but do dissolve in a nonpolar solvent such as hexane.
They do not conduct electricity, and have low melting points. Low molecular mass substances are likely to be gases
or liquids at room temperature.
Substances with metallic bonds conduct electricity when dry, do not dissolve in water or in hexane, have high
melting points, and are malleable.
7. Why does a substance dissolve in water? What do u mean by like dissolves in like
8. The water molecule has a positive and a negative end. (It is polar.) Choose the
substances below that will dissolve in water.
A. NaCl
B. CS2
C. Al
D. CO2
9. What is a covalent polar bond and covalent non polar bond? Explain in terms
of electro negativity difference.
10. Draw Lewis dot structure and name the shape for
A. CH4.
B. F2
C. NH3
D. H2S
10. Tell why H2O has a higher boiling point than CO2. Draw three water molecules and label
two hydrogen bonds
Hydrogen bonding
11. Draw three water molecules and label two hydrogen bonds.
12. An intermolecular force is weaker than a bond (ionic or covalent) because
A. the intermolecular force is between molecules, not within a molecule as a bond is
B. intermolecular forces affect the boiling points of substances (stronger forces mean
higher boiling points)
C. the intermolecular force is between substances with smaller positive and negative
charges than are the positive and negative charges that hold bonds together.
D. Covalent bonds are between atoms in a molecule. Intermolecular forces are between
molecules.
13. Choose the weakest of the intermolecular forces
A. hydrogen bond - when hydrogen bonds to F, O, or N, the shared electrons are drawn far
away from H, leaving a large positive charge
B. dispersion - momentary dipoles result from electrons accidentally spending more time
closer to one end of the molecule than to the other, giving very small positive and negative
charges
C. dipole-dipole - molecules with positive and negative ends (polar molecules) attract each
other