Download 18 Chemical Bonds

18 Chemical Bonds
BIGIDEA
Write the Big Idea for this chapter.
Use the “What I Know” column to list the things you know about the Big Idea. Then list the
questions you have about the Big Idea in the “What I Want to Find Out” column. As you read the
chapter, fill in the “What I Learned” column.
W
What I Want to Find Out
Copyright © McGraw-Hill Education. Permission is granted to reproduce for classroom use.
K
What I Know
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L
What I Learned
18 Chemical Bonds
1 Stability in Bonding
6(C), 6(D), 7(B)
MAINIDEA
Write the Main Idea for this lesson.
REVIEW VOCABULARY
Recall the definition of the Review Vocabulary term.
compound
compound
NEW VOCABULARY
Define each New Vocabulary term.
chemical formula
chemical formula
chemical bond
ACADEMIC VOCABULARY
unique
Define unique. Use a dictionary for help. Then use the word in a
sentence that demonstrates its scientific meaning.
unique
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Copyright © McGraw-Hill Education. Permission is granted to reproduce for classroom use.
chemical bond
1 Stability in Bonding (continued)
Student Edition,
pp. 552–556
Evaluate why sodium chloride is not like the elements that form it.
Reading Essentials,
pp. 314–317
Complete the graphic organizer. Use the table in your book for
information.
Silicon dioxide
contains
one atom of
and
atoms
of
Copyright © McGraw-Hill Education. Permission is granted to reproduce for classroom use.
GET IT?
.
Describe what a chemical formula shows you.
Summarize what can be learned about an element from its electron dot
diagram.
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1 Stability in Bonding (continued)
Student Edition,
pp. 554–556
Create your own electron dot diagrams for sodium and chlorine. Explain
how both atoms could become more stable.
Reading Essentials,
pp. 317–319
Complete the statements about chemical bonds.
,
When atoms
, or
, pulling
electrons, an attraction forms between the
. The attraction is called a
. A chemical bond is the
that
.
CONNECT IT
Make an analogy between the sharing of electrons and the completion of a jigsaw puzzle.
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Copyright © McGraw-Hill Education. Permission is granted to reproduce for classroom use.
them together to form a
1 Stability in Bonding (continued)
REVIEW I T !
1. MAINIDEA Explain why some elements are stable on their own while others are more
stable in compounds.
2. Compare and contrast the properties of potassium (K) and iodine (I) with the compound KI.
3. Identify what the electron dot diagram tells you about bonding.
Copyright © McGraw-Hill Education. Permission is granted to reproduce for classroom use.
4. Explain why electric forces are essential to forming compounds.
5. Describe why chemical bonding occurs. Give two examples of how bonds can form.
6. Think Critically The label on a box of cleanser states that it contains CH3 COOH. What elements
are in this compound? How many atoms of each element can be found in a unit of CH3 COOH?
7. Use Percentages Given that the molecular mass of magnesium hydroxide (Mg(OH )2) is
58.32 amu and the atomic mass of an atom of oxygen is 15.999 amu, what percentage of
this compound is oxygen?
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