Alkyl Halides Cissy Wang

Catherine Gong Block: C

Agenda

• 1. Review previous content • 2. Introduction of the topic • 3. Analyzing details of Alkyl Halides (examples)• 4. Question time• 4. Fun time• 5 Question time • 6. Assignment

Previous Review

• EXAMPLE• Rules of naming Alkyl groups?-1) Name the Alkane group first -2) Next, name the part of the Alkyl group-3)Decide the position of the structure ●(Least rule)—use the smaller number-4)Combine the ideas together and re-write the

name of the structure

1.Previous Review---prefixes• 1-meth• 2-eth• 3-prop• 4-but• 5-pent• 6-Hex• 7-hept• 8-oct• 9-non• 10-dec

Previous Review

• How to indicate the position of attachment on the hydrocarbon chain?

• Ex. (Least rule)—use the smaller number• CH 3—CH — CH 2 — CH —CH 2—CH 2—CH 2—CH 3 • ｜ ｜ CH 3 CH 2 —CH 3

• =4- ethyl-2-methyloctane

Introduction of the topic

• Basically, Alkyl halides is connected with Halogens------------ the special family in the Periodic Table ,formed by F, Cl, Br , I and At

• The process of learning naming Alkyl halides is straightforward.

Branch- Name-F Fluoro

-Cl Chloro

-Br Bromo

-I Iodo

Hydrocarbons with halogens attached

e.g): CH 3 — Cl Choromethane

CH 3— CH— CH 3 2-fluoropropane

｜ F

1)Alykl halides tend to be insoluble in water

2)Compounds with many fluorine atoms tend to be unreactive

3)Chloro and bromo compounds are susceptible to chemical attack, but require relatively drastic conditions.

Question Time?

• Do you have any part that we have talked about makes you feel confused?

Fun time

• Rule of the activity:-We want to form groups of 4

-The winner team of this activity can gain a prize

-Good luck girls ,and try your best!

Powerpoint Jeopardy

Vocabulary Diagram-formula

Formula-diagram

Other

100 100 100 100

300 300 300 300

500 500 500 500

Define: What is the prefix of 7?

• What is Alkane?

Give two kinds of branch’s names of the examples of hydrocarbons with halogen attached.

Name the following molecules?(100 point)

CH 3— CH 2— CI

Name the following molecules

CH 3— CH— CH 2 — CH 2— CH 2 — I ｜ CH 3

Name the following molecules

•See the question on the blackboard!!

Draw the following molecules:

trichloromethane

Draw the following molecules:

1,1,1-trifluoro-2-methylpentane

Draw the following molecules:

1,3,5-tribromocyclohexane

True or False??(100 point)

Alkyl halides tend to be soluble in water?

Explain

One of the properties of Alkyl halides states that: Compounds with many fluorine atoms tend to be unreactive. Why???

You are such a lucky dog!

Congratulation !!!

Question Time?

• We almost done the lesson, do you have any questions?

Assignment

• Textbook :• Page: P 225# 17 b, d, e#18, b, d