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

Some Tools for Measurement: Some Tools for Measurement: Have fun in lab Have fun in lab

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)

Metric and SI PrefixesMetric and SI Prefixes

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