Organic Lesson 18 "Properties of Alkanes & Conformations of Ethane"

Science and Technology Standards:

PA Standard 3.4.12A

Purpose:

1. I will describe the properties of alkanes
2. I will draw sawhorse representations and Newman projections for ethane.

Homework Due:

1. Section 2.4 & 2.5 Notes

Handouts/Supplies:

1. Candle Demonstration

I. Introduction

Opening Assignment:

Warm-Up: Complete functional group quiz (Carbonyl - Ester).
Review warm-up
State the purpose

II. The Lesson:

Activity #1: Complete Section 2.1 - 2.3 Quiz
Activity #2: Review section 2.4 "Properties of Alkanes"
Activity #3: Discuss burning alkanes & balance propane, butane, and pentane equations
Activity #4: Discuss chloronating alkanes
Activity #5: Discuss the melting and boiling points of various alkanes
Activity #6: Complete candle demonstration (igniting the candle wax vapor)
Activity #6: Review section 2.5 "Conformations of of Alkanes"
Activity #7: Discuss sawhorse representation, Newman Projection, staggered conformation, eclipsed conformation
Activity #8: Complete notes on sections 2.4 & 2.5
Activity #9: Practice problems (2.10 - 2.13)

III. Closure

Summary Assignment:

Summarize today's lesson
1. describe the properties of alkanes
2. draw sawhorse representations and Newman projections for ethane.

Homework Assignment (Write down in planners):

1. Complete notes on sections 2.5 & 2.6
2. Problems 2.10 - 2.13
3. Identify the alkane in gasoline & diesil fuel (EC)

Preview of Next Class:

1. Drawing chemical structures
2. Cycloalkanes