Chem 161-2010 lecture 2nd week

Chem 161-2010 lecture 2nd week - CHEMISTRY 161-2010 2nd...

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CHEMISTRY 161-2010 2nd WEEK LECTURE ANNOUNCEMENTS E-MAIL Don’t let your mailboxes get full. QUIZ/EXAM/WORKSHEET MISCELLANEOUS Bring copy of notes to class Review notes before coming to class. Do you want me to provide you with extra problems (including detailed sol’ns)? Chem 161-2010 lecture 2 nd week 1
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Dr. Ed Tavss Chem 162 edtavss@aol.com TAVSS’ SCHEDULE Pd. Mo n Tue Wed Thu Fri 0 1 Chem 161 Office Hours SC-219 8:30-9:30 Chem 161 Office Hours SC-219 8:30-9:30 2 Chem 161 Lecture 9:50-11:10 AM, Scott 135 Corresponding recitations: 50-54 Chem 161 Lecture 9:50-11:10 AM, Scott 135 Corresponding recitations: 50-54 3 Tuesday, Sep. 14 th and Friday, Sept. 17 th , Rec. quiz I, Chapters 1.1-3.6 Wednesday, Sept. 22 nd , Exam I, 9:40 – 11:00 PM, Chapters 1 - 3.8 Tuesday, Oct. 5h and Friday, Oct. 8th, Rec. quiz II, Chapters 4.4-5.9 Wednesday, Oct. 20 th , Exam II, 9:40 – 11:00 PM, Chapters 3.9-6.8 Tuesday, Nov. 2 nd and Friday, Nov. 12 th , Recitation quiz III, Chapters 7 and 8 Wednesday, Nov. 17 th , Exam III, 9:40 – 11:00 PM, Chapters 7.1-9.5 Tuesday, Nov. 23 rd and Friday, Dec. 3 rd , Recitation quiz IV, Chapters 9.5-11.4 Friday, Dec. 17 th , Final Exam, noon - 3 PM, Chapters cumulative 1.1-11.10 ?, Last day to drop course with “W” *Chapter 20 in the Rutgers Custom edition is Chapter 22 in the retail edition. Chem 161-2010 lecture 2 nd week 2
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PLAN FOR TODAY : Chapter 1: • SCIENCE, HYPOTHESIS, THEORY, LAW • UNIT CONVERSIONS Simple Cumulative Fractions Areas and volumes Temperature • SIGNIFICANT FIGURES Scientific notation (exponential notation) Significant figures Zeros Multiplication and division Addition and subtraction Complex math • PRECISION VS. ACCURACY • TERMINOLOGY Chapter 2: • LAWS AND THEORIES • THE ATOM Subatomic particles Isotopes Periodic table • TYPE III NOMENCLATURE Non-metals Chem 161-2010 lecture 2 nd week 3
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THE SCIENTIFIC METHOD Chemistry is a science. What is a science? A systematic method of looking at the world around us Observation Experiment New Observation Law Theory Chem 161-2010 lecture 2 nd week 4 A hypothesis is an explanation of an observation; the explanation must be testable. Lavoisier: When CH4 burned in air, there was no change in total mass. Hypothesis: When a substance combusts, it combines with components of air. After sufficient testing of hypotheses under various conditions. Lavoisier’s Law of Conservation of Mass: “In a chemical reaction, matter is neither created nor destroyed.” A theory explains what nature does and why, e.g., John Dalton’s Atomic Theory. Dalton explained the law of conservation of mass. Matter is composed of atoms, which merely rearrange in chemical changes, and therefore are neither created nor destroyed, and the total amount of mass remains the same.
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INTERNATIONAL MEASUREMENT SYSTEM Système International (SI) Base units: o length: meter (m) – 3.28 ft. = 39.37 in.
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This document was uploaded on 11/02/2011 for the course GEN CHEM 162 at Rutgers.

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Chem 161-2010 lecture 2nd week - CHEMISTRY 161-2010 2nd...

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