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# scan-9 - Dr Pustam Chem 127 Fall 2009 Chapter 1 Outline 1...

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Unformatted text preview: Dr. Pustam September 24, 2009. Chem 127 - Fall 2009 Chapter 1 Outline 1. Learn the Fundamental deﬁnitions (Section 1.1). You need to be able to differentiate between a physical and chemical property and physical and chemical changes, see Sample Problem 1.1 and 1.2 on pg. 5 and 7. There are three states of matter — solids, liquids and gases. Read and learn the characteristics of the states of matter. Know the differences between potential and kinetic energy and be able to give examples. Understand what energy conservation is about. 2. A study of the Scientiﬁc Method (Section 1.3) See Figure 1.6 in text on pg. 13. Understand the steps of the scientiﬁc method and be able to distinguish between a hypothesis and a theory. 3. Solving Chemical Problems (Sections 1.4, 1.5) Measured quantities have units. You should be able to convert from one unit to another using conversion factors. Sample problem 1.3 on pg. 17 is very useful. Understand the approach used and try to develop yours. Practice this by working the problems in your lab manual in Experiment 1. Learn the SI units (Table 1.2) as you will be meeting these throughout the book. Also learn the preﬁxes used (Table 1.3). Read sample problems 1.4, 1.5, 1.6, 1.7. Learn how to convert ﬁom degree Celsius to Farenheit and degree Celsius to Kelvin. Know how to determine density and what are its units. 4. Measurements and Uncertainty (Section 1.6) Learn how to express uncertainty. ‘ Learn the rules associated with signiﬁcant ﬁgures and be able to add, subtract, multiply and divide numbers with the correct numbers of signiﬁcant ﬁgures. This will be useful in lab, when you will express your measurements to the appropriate number of signiﬁcant ﬁgures. Understand the difference between precision and accuracy as well as random and systematic errors. Suggested problems ~n Cha ~2,—r4,y§,;3’,,26, , 34, gay iii/1);“ s! ytsesswaaesaa ...
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