Wednesday, March 5th: “A” DayThursday, March 6th: “B” Day

AgendaCollect labs: “Polymers and Toy Balls”Organic chemistry overviewMovie: “Carbon: The Element of Life” (25 min)Homework: Pg. 686: #2, 3, 5, 6, 7, 9, 11, 15

Pg. 695: #1, 3Next time:

Organic Overview QuizChapter 6 review work day

Lab: “Polymers and Toy Balls”Questions/Problems?

Make sure your table of contents is updated!

Make sure your data table is labeled with units!

Put in lab folder and put folder in bin…

Organic Chemistry Overview

As a chemistry teacher, I felt that I couldn’t leave Chapter 6: “Covalent Compounds” without talking a little bit about carbon and it’s many compounds…

Properties of Carbon

1. Carbon almost always forms covalent bonds.2. Even a single covalent bond between 2

carbon atoms is quite strong.3. Carbon compounds are not extremely

reactive under ordinary conditions.4. Because carbon can form up to 4 single

bonds, a wide variety of compounds is possible.

Allotropes of Carbon

As an element, carbon atoms can form different bonding arrangements, or allotropes.

“Buckminsterfullerene” was named in honor of architect and designer Buckminster Fuller, whose geodesic domes had a similar shape.

Additional Allotropes of CarbonIn 1991, nanotubes were discovered.Nanotubes are hexagons of carbon atoms

made to form a hollow cylinder. Nanotubes have a diameter about 10,000

times smaller than a human hair, but are between 10 and 100 times stronger than steel by weight.

Carbon black and charcoal are other allotropes of carbon.

Organic CompoundsMost compounds of carbon are referred to as

organic compounds.Organic compounds contain carbon and most

also contain atoms of hydrogen.Many other elements, like oxygen, sulfur,

phosphorus and the halogens can also bond with carbon.

There are more known compounds of carbon than compounds of all the other elements combined!

HydrocarbonsCompounds that contain ONLY carbon and

hydrogen are called hydrocarbons.

Alkane:Simplest hydrocarbonCarbon atoms connected by single bonds

Example: Ethane, C2H6

Lewis Structure:

HydrocarbonsAlkene:

Contain at least 1 double bond between 2 carbon atoms

Example: Ethene, C2H4

Lewis Structure:Alkyne:

Contain at least 1 triple bond between 2 carbon atoms

Example: Ethyne, C2H2

Lewis Structure:

Carbon Atoms can Form RingsSince carbon atoms like to bond with each

other, they can also form ring structures.

Butane Cyclobutane

Carbon Atoms can Form RingsBenzene is an aromatic ring structure with the

formula C6H6.

Even though benzene has alternating double bonds between the carbon atoms, experiments have shown that all the carbon-carbon bonds are the same.

Benzene is a molecule with resonance structures, that is called an “aromatic ring”.

Saturated/Unsaturated HydrocarbonsSaturated hydrocarbon: an organic compound

formed only by carbon and hydrogen linked by single bonds. (The carbon atoms are “saturated” or “filled” with hydrogen atoms)

Unsaturated hydrocarbon: a hydrocarbon in which not all carbon atoms have 4 single covalent bonds. Alkenes and alkynes are unsaturated

hydrocarbons.

Polymers

Monomer: a small molecule than can combine with other monomers to form a polymer. (monomer + monomer = polymer)

Polymer: any of numerous natural and synthetic compounds of unusually high molecular weight consisting of up to millions of repeated linked units, each a relatively light and simple molecule

Other Organic CompoundsHydrocarbons are only 1 class of organic

compounds.Other classes of organic compounds include other

atoms like oxygen, nitrogen, sulfur, phosphorous, and the halogens, along with carbon and usually hydrogen.

Functional Group: the portion of a molecule that is active in a chemical reaction and that determines the properties of many organic compounds.

Some Common Functional Groups

Movie: “Carbon: The Element of Life”

Complete the front side of the worksheet as you watch the movie.

The back side is homework…

HomeworkPg. 686: #2, 3, 5, 6, 7, 9, 11, 15Pg. 695: #1, 3

Looking Ahead:Chapter Test/Concept Review Due:

Thursday, March 13th: “A” Day Friday, March 14th: “B” Day