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Do you need “just a little” chemistry, with a biochemistry focus? Are you a nursing student?...
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Transcript of Do you need “just a little” chemistry, with a biochemistry focus? Are you a nursing student?...
Do you need “just a little” chemistry, with a biochemistry focus?
Are you a nursing student?
Exercise science or kinesiology?
Just an interested student who needs a good science course?
….then you’ve come to the right place!
What about Bob?What about Bob?
Originally from Bay City, MIOriginally from Bay City, MI Went to CMU (UG) – Fire up Chips!Went to CMU (UG) – Fire up Chips! Went to U of Wisconsin (Ph.D.)Went to U of Wisconsin (Ph.D.) Go Bucky Go Bucky
Married & have 2 great kids!!!Married & have 2 great kids!!! Sports Nut… Lions & Tigers & Red Sports Nut… Lions & Tigers & Red Wings Oh My!Wings Oh My!
How this course works:How this course works:There are 2 parts – a lab and a lecture. There are 2 parts – a lab and a lecture.
You should be enrolled in one lab section as part of You should be enrolled in one lab section as part of this class. You will receive one grade combining this class. You will receive one grade combining your work in lab and lecture. Your lab grade your work in lab and lecture. Your lab grade depends on your participation and quality of work. depends on your participation and quality of work.
Your lecture grade consists of:Your lecture grade consists of:
• Class participation.Class participation.
• Quizzes.Quizzes.
• Exams.Exams.
The KeypadsThe Keypads
Keypads will provide instant feedbackKeypads will provide instant feedback like “Who Wants to be a Millionaire”like “Who Wants to be a Millionaire”
May May sometimes use as quiz replacementsometimes use as quiz replacement
Unique keypad number for each personUnique keypad number for each person You can only use your own!!!You can only use your own!!!
I had chemistry as a…I had chemistry as a…
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1.1. Sophomore in H.S.Sophomore in H.S.
2.2. Junior in H.S.Junior in H.S.
3.3. Senior in H.SSenior in H.S
4.4. in College…in College…
5.5. I like ponies!I like ponies!
How do you feel about chemistry?How do you feel about chemistry?
1.1. EasyEasy
2.2. Some work but am confident…Some work but am confident…
3.3. A bit anxiousA bit anxious
4.4. TerrifiedTerrified
5.5. Completely & utterly terrified…Completely & utterly terrified…
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How to succeed…How to succeed…
Figure out what study strategies work best for you. Know your learning style…
DO the work!
Form study groups.
Come see me! Ask questions!
AnnouncementsAnnouncements & Agenda& Agenda (1/10/07)(1/10/07)
Hello Hello
Review Chapter 1: Focus more on this in labReview Chapter 1: Focus more on this in lab Measuring stuffMeasuring stuff Scientific notationScientific notation
SI (metric) system & prefixesSI (metric) system & prefixes
Using significant figuresUsing significant figures
Unit conversionsUnit conversions
Chapter 2: Energy (2.1-2.3)Chapter 2: Energy (2.1-2.3)
24 Good Practice Problems (Ch 1)24 Good Practice Problems (Ch 1)
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1.03, 1.05, 1.07, 1.11, 1.17, 1.19, 1.03, 1.05, 1.07, 1.11, 1.17, 1.19, 1.27, 1.29, 1.31, 1.35, 1.37, 1.43, 1.27, 1.29, 1.31, 1.35, 1.37, 1.43, 1.47, 1.49, 1.51, 1.53, 1.59, 1.61, 1.47, 1.49, 1.51, 1.53, 1.59, 1.61, 1.63, 1.67, 1.69, 1.71, 1.73, 1.751.63, 1.67, 1.69, 1.71, 1.73, 1.75
(Note: Answers are in back of book!)(Note: Answers are in back of book!)
24 Good Practice Problems (Ch 2)24 Good Practice Problems (Ch 2)
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2.01, 2.09, 2.13, 2.15, 2.17, 2.21, 2.01, 2.09, 2.13, 2.15, 2.17, 2.21, 2.23, 2.25, 2.27, 2.29, 2.31, 2.33, 2.23, 2.25, 2.27, 2.29, 2.31, 2.33, 2.37, 2.39, 2.41, 2.43, 2.45, 2.47, 2.37, 2.39, 2.41, 2.43, 2.45, 2.47, 2.51, 2.53, 2.55, 2.56, 2.59, 2.602.51, 2.53, 2.55, 2.56, 2.59, 2.60
Chapter 1 Chapter 1
MeasurementsMeasurements
Units of MeasurementUnits of Measurement
(Probably mostly review…)(Probably mostly review…)
Measurement in ChemistryMeasurement in Chemistry
In chemistry weIn chemistry we
• measure quantities.measure quantities.
• do experiments.do experiments.
• calculate results. calculate results.
• use numbers to report use numbers to report measurements.measurements.
• compare results to compare results to standards.standards.
Copyright © 2005 by Pearson Education, Inc.Publishing as Benjamin Cummings
Units of Measurement:Units of Measurement: Metric System Metric System
In the metric and SI systems, one unit is used for each In the metric and SI systems, one unit is used for each type of measurement:type of measurement:
MeasurementMeasurement MetricMetric SISILengthLength meter (m)meter (m) meter (m)meter (m)VolumeVolume liter (L)liter (L) cubic meter cubic meter (m(m33))MassMass gram (g)gram (g) kilogram (kg)kilogram (kg)TimeTime second (s)second (s) second (s)second (s)TemperatureTemperature Celsius (Celsius (C)C) Kelvin (K) Kelvin (K)
An An equalityequality
states the same measurement in two different units.states the same measurement in two different units.
can be written using the relationships between two can be written using the relationships between two metric units.metric units.
ExampleExample: 1 meter is the same as 100 cm and 1000 : 1 meter is the same as 100 cm and 1000 mm.mm.
1 m1 m = 100 cm= 100 cm
1 m1 m = 1000 mm= 1000 mm
Metric EqualitiesMetric Equalities
Know Scientific NotationKnow Scientific Notation
Here are some numbers written in standard formatHere are some numbers written in standard format and in scientific notation.and in scientific notation.
Number in Number in Number in Number in Standard Format Standard Format Scientific NotationScientific Notation
Diameter of the EarthDiameter of the Earth12 800 000 m12 800 000 m 1.28 x 10 1.28 x 1077 m m
Mass of a humanMass of a human68 kg 68 kg 6.8 x 10 6.8 x 101 1 kgkg
Length of a pox virusLength of a pox virus0.000 03 cm0.000 03 cm 3 x 10 3 x 10-5 -5 cmcm
. l. l22. . . . l . . . . l. . . . l . . . . l33 . . . . l . . . . l . . . . l . . . . l44. . cm. . cm
• The markings on the meter stick at the end of the The markings on the meter stick at the end of the orange line are read asorange line are read as
the first digit the first digit 2 2
plus the second digit plus the second digit 2.7 2.7
• The last digit is obtained by The last digit is obtained by estimatingestimating..
• The end of the line might beThe end of the line might be estimated between 2.7–estimated between 2.7–2.8 as half-way (0.5) or a little more (0.6), which gives 2.8 as half-way (0.5) or a little more (0.6), which gives a reported length of 2.7a reported length of 2.755 cm or 2.7 cm or 2.766 cm. cm.
Reading a Meter StickReading a Meter Stick
Known & Estimated Digits Known & Estimated Digits (Significant Figures)(Significant Figures)
In the length reported as 2.76 cm, In the length reported as 2.76 cm,
• The digits 2 and 7 are The digits 2 and 7 are certain (certain (knownknown).).
• The final digit 6 was The final digit 6 was estimated (estimated (uncertainuncertain).).
• All three digits (2.76) are All three digits (2.76) are significant including the significant including the estimated digit.estimated digit.
. . ll88. . . . l . . . . l. . . . l . . . . l99. . . . l . . . . l. . . . l . . . . l1010. . cm. . cm
What is the length of the orange line?What is the length of the orange line?
1) 9.0 cm 1) 9.0 cm
2) 9.03 cm 2) 9.03 cm
3) 9.04 cm3) 9.04 cm
Learning CheckLearning Check
Rounding Off Calculated AnswersRounding Off Calculated Answers
In calculations,In calculations,
• answers must have the same answers must have the same number of significant figures number of significant figures as the measured numbers. as the measured numbers.
• often, a calculator answer often, a calculator answer must be must be rounded offrounded off..
• rounding rulesrounding rules are used to are used to obtain the correct number of obtain the correct number of significant figures.significant figures.
Copyright © 2005 by Pearson Education, Inc.Publishing as Benjamin Cummings