Chapter 1
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CHEMISTRY 101
Prof. Mohammed Wazeer
Sections 10, 11, and 12
 Textbook: Burdge 1stEdition
 Office Location: Building 4, Room 221
 Office Hours: SMW: 8:00-10:00 am or by
appointment
 Office Telephone: 3829
 Email: miwazeer@kfupm.edu.sa
Grade Distribution
•
•
•
•
•
First Major
Second Major
Lab
work
Class work
Final Exam
• Total
60
60
100 (75%)
80 (65%)
100
15%
15%
25%
20%
25%
400
100%
Distribution Class Grade 80
•
•
•
•
•
8 Quizzes will be given
Take the best 6 for each student
Attendance
Home Work (WebCT)
60
10
10
Students Responsibilities
1. Read and Study every detail in textbook.
2. Use the internet educational tools provided by Burdge
and others.
3. Search for other sources of information: other textbooks
and references, internet, etc.
4. Solve homeworks on time (WebCT).
Homeworks are NOT enough to get a good grade,
5. students should solve all the problems they can and
also old exams.
6.Check www.kfupm.edu.sa/chem/gchem and instructor
website http://faculty.kfupm.edu.sa/CHEM/miwazeer/
regularly to get information
Instructor’s Role
To summarize important points of each chapter.
Give directions on how and where to find information.
Solve typical problems and give quizzes during recitation.
Answer your questions during office hours.
In summary, I am a facilitator and NOT a teacher that will
feed information in your brains. You are responsible now
for your life.
Figure 01.03
Figure 1.5: The various parts of the
scientific method.
Atoms, Molecules, Compounds and Mixtures
3 states of Matter Solid, Liquid and Gas
Figure 01.05
Figure 01.06a
Figure 01.06b
Figure 01.07
Table 01.02
Figure 01.08
Figure 01.09
Table 01.03
Properties of Matter
1. Extensive property –
Depends on the amount of matter.
Example: mass, volume etc.
2. Intensive property
Does not depends on the amount of matter
Example: Density, temperature etc.
Uncertainty in Measurement
•
A digit that must be estimated is
called uncertain.
• A measurement always has some
degree of uncertainty.
Figure 01.10
Rules for Significant Figures in
Mathematical Operations
Multiplication and Division: # sig figs in the
result equals the number in the least precise
measurement used in the calculation.
6.38 X 2.0 =
12.76 → 13 (2 sig figs)
• Addition and Subtraction: # sig figs in the result
equals the number of decimal places in the least
precise measurement.
6.8
+ 11.934
= 18.734
• 18.734  18.7 (3 sig figs)
• Sample problem 1.5
a. 317.5 mL
+ 0.675 mL
318.175 mL round to 318.2 mL
b. 47.80
- 2.075
45.725
round to 45.73
c. 13.5g/ 45.18 L = 0.2988047 round to 0.299 g/L
S.P. 1.5 contd
d. 6.25 cm x 1.175 cm = 7.34375 cm2
round to 7.34 cm2
e.
5.46 x 102 g
+49.91 x 102 g
55.37 x 102 g
5.537 x 103 g
• Examples
1.
0.355
+105.1
-100.5820
•
4.8730 → 4.9
2. 4.562 x 3.99870 / (452.6755 – 452.33)
•
0.3455
• 52.79904 → 2 sig fig
• 53
Precision and Accuracy
Accuracy refers to the agreement of
a particular value with the true value.
Precision refers to the degree of
agreement among several elements
of the same quantity.
Figure 01.11
The results of several
dart throws show
the difference between
precise and accurate.
Figure 01.12
The three major temperature scales
Normal body temperature on the
Fahrenheit, Celsius, and Kelvin scales
TEMPERATURE CONVERSION
TK = TC + 273.15
TF = TC x 9oF/5oC + 32 F
Dimensional Analysis
1m = 100 cm;
this can be written as 100 cm
1m
1 inch = 2.54 cm
1 inch or
2.54 cm
2.54 cm
1 inch
Convert 12.00 in into m
12.00 in x 2.54 cm x 1 m
1 in
100 cm
or
= 0.3048 m
1m
100 cm
• Sample problem 1.7
convert 2400 mg into pounds (lb)
1 lb = 453.6 g.
Sample problem 1.8
convert 5.2 L into m3
Ethylene glycol is the main component in the automobile antifreeze. Device a
new temperature scale where M.P. -45 oC is taken as 0 oA and B.P. 115 oC is
taken as 100 oA. What is the temperature in oC when this thermometer reads
86 oA?
100 oA
86 oA
115 oC
100 oA = 160 oC
?
86 oA x 160 oC = 137. 6 oC
100 oA
0oA
-45 oC
137.6 oC - 45 oC = 92.6 oC
= 93 oC
Text Figure 01.06
TABLES
Table 01.01