Bonding Worksheet
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1
2
3Review and Assessment
For: Self-Assessment
Review and Assessment
Visit:
Web Code: cxa-2050
Target Reading Skill
Chapter 1 Assessment
Target Reading Skill
Type of
Charge on
How Bonds Forms
Example
Compare and Contrast
Compare and Contrast
Complete
Chemical Bond
Bonded Atoms
the compare–contrast table on
Attraction between oppositely charged
a.
?
?
Ionic bond
a.
Yes; positive and
b.
Types of Chemical Bonds.
ions
negative
b.
Sample answer: sodium chloride (NaCl)
?
?
c.
d.
Polar bond
Unequal sharing
Reviewing Content
Yes; slightly positive and slightly negative
c.
of electrons
Sample answer: hydrogen fluoride (HF)
d.
?
?
Nonpolar bond
e.
f.
O
molecule
2
e.
Equal sharing of electrons
f.
No
?
?
Metallic bond
g.
yes; positive
h.
g.
Attraction between positively charged
ions and surrounding electrons
h.
Sample answer: aluminum foil
Reviewing Key Terms
Complete the following sentences so that
Choose the letter of the best answer.
your answers clearly explain the key terms.
a
c
a
c
d
1.
2.
3.
4.
5.
Valence electrons in an atom are those that are
1.
When atoms react, they form a chemical
a.
held most loosely.
6.
6.
the force of attraction that holds two
bond, which is
.
of the lowest energy level.
b.
atoms together as a result of the
c.
always easily lost.
Polyatomic ions such as ammonium ions
7.
rearrangement of electrons between them.
never easily lost.
–
–
d.
(NH
) and nitrate ions (NO
) are ions that
more than one atom.
7.
4
3
consist of
.
An electron dot diagram shows an atom’s
2.
positive and negative ions.
8.
number of
8.
Magnesium chloride is an example of an ionic
9.
neutral particles made of two or more
protons.
a.
compound, which means a compound
atoms joined by covalent bonds.
b.
electrons.
composed of
.
a mixture made of two or more
10.
valence electrons.
c.
The formulas N
, H
O, and CO
all represent
9.
2
2
2
elements, at least one of which is a metal.
chemical bonds.
d.
molecules, which are defined as
.
3.
When an atom loses or gains electrons, it
Pure metals tend to be weaker and more
10.
becomes a(n)
reactive than an alloy, which is a
.
a.
ion.
b.
formula.
crystal.
subscript.
c.
d.
A covalent bond in which electrons are shared
4.
E-LA:
Writing 8.2.0
unequally is a
Comparing and Contrasting Go to your
Writing Mode Expository
double bond.
a.
local grocery store and observe how the
b.
triple bond.
products on the shelves are organized. Write
Scoring Rubric
polar bond.
a paragraph comparing how foods are
c.
Exceeds criteria; shows in-depth
4
organized in a grocery store and how
nonpolar bond.
d.
understanding of the periodic table
elements are organized in the periodic table.
5.
The metal atoms in stainless steel are held
3
Meets criteria
together by
2
Includes a comparison but lacks details
a.
ionic bonds.
and/or reveals some misconceptions about
polar bonds.
b.
the periodic table
covalent bonds.
c.
Atoms and Bonding
metallic bonds.
d.
1
Includes a general comparison only and/or
reveals little knowledge of the periodic table
◆ 205
Chapter 5
Video Assessment
Atoms and Bonding
Show the Video Assessment to review
chapter content and as a prompt for the
writing assignment. Discussion questions:
What do the elements in a single group on
the periodic table have in common? (They
have the same number of electrons in their
outer shell.) Where are the most reactive
elements located on the periodic table? (In
Groups 1 and 17)
205
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