Answer Key Bonding Unit

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CHEMISTRY 20 REVIEW WORK
NAME:
Answer Key
BONDING UNIT
1. Compounds made from nonmetallic elements are
covalently
bonded.
2. Compounds made from a metallic and nonmetallic element have
ionic
bonds.
3.
You can tell if an element is a metal since
it can be found on the left side of the
periodic table.
4. You can tell if an element is a nonmetal since
it can be found on the right side of the
periodic table.
5. The atoms of a metal are joined together by a
metallic
bond.
6. What two types of substances have atoms joined together by covalent bonds?
Network solids
and small covalent molecules.
7. A metallic bond is stronger
for metals having more valence electrons and smaller ion
size.
8. An ionic bond is stronger for
ions having higher charge and smaller radii
.
9. Covalent bonds are stronger for
3-dimensional networks than 2 dimensional networks..
10. Small covalent compounds are held together by attractive forces that are called
intermolecular forces or
Van Der Waals forces
.
11. In the chart below, list the types of intermolecular forces, when they exist and tell what
controls the strength of each.
Type of
When will this intermolecular
What makes this intermolecular force
intermolecular force
force exist?
stronger
12. dispersion force
13. between all small covalent
14. stronger for larger molecules and
molecules
straight chain molecules
15. dipole-dipole
16. exists between polar
17. stronger when the molecule is more
force
molecules
polar (larger difference in
electronegativities)
18. hydrogen bonds
19. exists between polar
20. these are stronger for more polar
molecules where hydrogen
molecules
is bonded to N, O or F

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