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Date
Section 3.2 How Atoms Combine (continued)
Main Idea
Chemical
Reactions
Details
Identify the meaning of symbols in a chemical formula by writing
the meaning in words below each symbol.
Use with page 64.
Mixtures and
Solutions
+
2H2
O2
2H2O
Summarize information about mixtures and solutions by completing the graphic organizer below. Answers may vary for examples.
Use with pages 65–66.
Example:
Homogeneous
mixtures
(or
)
gases
Example:
Mixtures
Example:
Example:
mixtures
Label the pH scale to help you understand and remember pH. Write
under the acidic and the base parts of the scale two facts about and
an example of each.
Distilled water
pH 7
Tomato
pH 4
Lemon
pH 2
0
Milk
pH 6
1
2
3
4
More acidic
R EAL-W ORLD CONNECTION
5
Household ammonia
pH 11
Antacid
pH 10
6
7
13
14
Matter and Atomic Structure
31
Neutral
8
9
Drain cleaner
pH 13
10
11
12
More basic
Compare and contrast chemical
equations and algebraic equations.