Department of Chemistry CHEM1020 General Chemistry *********************************************** Instructor: Dr. Hong Zhang Foster Hall, Room 221 Tel:

CHEM1020/General Chemistry _________________________________________ Chapter 9. (L1)-Organic Chemistry Today’s Outline..Syllabus and course description..How to study CHEM1020..Basic theme of organic chemistry Review of electron dot structure The elements of C, H, O, N, S, X Capability of carbon, ways of C to combine with C How can organic compounds differ?

Chapter 9. (L1)-Organic Chemistry Syllabus And Course Description -Read the syllabus very carefully -Your textbook (a keeper) -Course design and grading -Lecture schedule chapter, pages, contents, quiz, exam -Lecture notes (on web) -Your responsibilities attendance, reading, questions -Labs and experiments

Chapter 9. (L1)-Organic Chemistry Course Description Two parts of CHEM1020 Part I. Organic world and life chemistry Organic chemistry Polymer chemistry Biochemistry Part II. Chemistry of our environment Earth chemistry Air chemistry Water chemistry Environmental toxicology Energy and chemistry

Chapter 9. (L1)-Organic Chemistry How To study? -Attend the lectures -Be active in class -Read the textbook -Ask questions and come for help -Do well with quizzes -Do well with exams -Learn from your experiences -Learn to read to learn

Chapter 9. (L1)-Organic Chemistry How to study and learn To know, to know the known To think, to get to know the unknown How can you be smarter than others? Answer: Know more How to know more? To learn how to think, so that you can know actively and know the unknown.

Mountain and Clouds

Forest

Flower and leaves

Lake and Forest

Oxisol: A Red Soil in Tropical Regions

Ultisol: Common Red Soil in TN

Iceberg and Titanic

Beach and Sand

Yosemite

Mineral: Quartz (SiO 2 )

Cinnabar: HgS

Mineral: Roselite

Chinese Medicine

James Bond Car

Chimney with Nasty Smoke

Nasty Discharge to a River

Our Solar System

Chapter 9. (L1)-Organic Chemistry Basic Theme of Organic Chemistry Organic chemistry is the chemistry of compounds containing carbon backbones or carbon-carbon bonds Question: How many ways carbon and carbon can join together to form molecules of carbon-carbon bonds?

Chapter 9. (L1)-Organic Chemistry Review of electron dot structure See your textbook for a detailed review Electron dot structure of C, H, O, N, S.. ·C · ·H :O:..... ·N· :S:..

Chapter 9. (L1)-Organic Chemistry Basic Theme of Organic Chemistry Question: How many ways carbon and carbon can join together to form carbon- carbon bonds? Basically, three ways: C–C C=C C

Chapter 9. (L1)-Organic Chemistry Basic Theme of Organic Chemistry Question: How many ways carbon and carbon can join together to form carbon- carbon bonding units? Basically, three bonding units: C–C C=C C

Chapter 9. (L1)-Organic Chemistry Basic Theme of Organic Chemistry Question: How many ways carbon and carbon can join together to form carbon backbone containing carbon-carbon bonding units? Basically, two ways or two kinds of carbon backbone or skeleton: …liner, open chain …non-linear, closed ring Hydrogen will fill out the empty bonding requirements. Thus, organic compounds are C and H compounds.

Chapter 9. (L1)-Organic Chemistry Basic Theme of Organic Chemistry Question: What is the 3D structures of organic compounds? Key concept: C has a tetrahedral 3D structure All carbon organic compounds have their 3D structures based on the 3D structure of C atoms according to the C and C bonding

Chapter 9. (L1)-Organic Chemistry Basic Theme of Organic Chemistry Question: Are there any ways in which organic compounds can get different flavors or become different? Answer: By addition of O, N, S, and halogens such as F, Cl, and Br, and maybe some others (such as P)

Chapter 9. (L1)-Organic Chemistry Basic Theme of Organic Chemistry Question: How many ways in which organic compounds can differ? Answer: …C and C bonds …C chain: open or closed …3D structure …Number of C atoms … Ingredients of O, N, S, F, Cl, Br, and others

Chapter 9. (L1)-Organic Chemistry Basic Theme of Organic Chemistry Organic chemistry, a game kids can do and will enjoy. Only a few basic unit components: C, H, O, S, F, Cl, Br, P, and maybe some more The beauty of chemistry: A highly complicated world composed of only a few basic components.

Chapter 9. (L1)-Organic Chemistry Quiz Time Homework: Make up 3 quiz questions based on the notes of this lecture about basic theme of organic chemistry together with your own answers with four choices (only one is correct). Next time, I’ll show you the quiz questions I make up and let’s have a comparison and we’ll have fun. Award: The best of some quiz questions from you may be used in the real tests you are going to take.

Chapter 9. (L1)-Organic Chemistry Quiz Time Generally, in how many ways can C and C join together to form C-to-C bonding in organic compounds? (a) one way, C-to-C single bond; (b) two ways, C-to-C single and double bonds; (c) three ways, C-to-C single, double, and triple bonds, plus combinations of the various C-to-C bonding types; (d) four ways, C-to-C single, double, triple, and double- double bonds.

Chapter 9. (L1)-Organic Chemistry Quiz Time Generally, in how many ways can C-to-C bonded units join together to form a carbon chain or backbone or skeleton in organic compounds? (a) one way, open chain; (b) two ways, open chain and closed chain or ring; (c) infinite ways; (d) none of above is right.

Chapter 9. (L1)-Organic Chemistry Quiz Time The main chemical base of 3D structure of organic compounds is (a) the valence electron bonding structure of H; (b) the valence electron bonding structure of O; (c) the valence electron bonding structure of C; (d) the valence electron bonding structure of N.