Finishing up the school year, some teachers are covering Organic Chemistry, and that is the topic of the next three posts.
1. Classify hydrocarbons as alkanes, alkenes or alkynes; draw structural formulas for hydrocarbon molecules if given their molecular formulas.
2. Name hydrocarbons using the IUPAC system and write the structural formula given its name.
3. Construct all possible structural isomers for different hydrocarbons.
This topic is a good revisit of the topic of Bonding and is useful for some review. Here's an introduction of the basics of Organic Chemistry:
BTW, there's a handy summary of organic information on the NYS Regents Chemistry Reference Table. A link for it is listed in my Teaching Resources (link above).
Here's a powerpoint presentation about Naming Organic Compounds that might be useful:
I remember saying "methyl ethyl propyl butyl" over and over while I was lecturing to get students to remember those prefixes. The acronym I learned was "monkeys eat purple bananas" -- use whatever works!
This page contains a full overview of formula writing and naming -- you might not want to print the entire post, but there may be some useful sections:
Continuing with the introduction of hydrocarbons is this video about unsaturated hydrocarbons.
Your students may recognize the terms saturated and unsaturated as they have heard about saturated and unsaturated fats. Saturated fat (such as butter or lard) is solid at room temperature as it has a greater mass/higher melting point, and unsaturated fat (such as olive or corn oil) is liquid at room temperature as it has lower mass/lower melting point.
This is very brief worksheet:
This is a worksheet with answers, but it has some examples past the alkane, alkene and alkyne series:
Here's a cute online quiz:
This is a little tougher, but it has answers:
The typical lab at the high school chemistry level is using molecular model kits to build all of the isomers of the first five alkanes.
If you don't have molecular model kits in the chemistry department, try the biology department to see if they have kits you can use.
Here's are some examples of labs building molecular models and isomers:
Here's a lab I used a lot (it's not a great copy):
This lab is interesting b/c it's all about the isomers of heptane. It is probably a college lab, but could be a good enrichment project for a student:
This lab is several pages, but if desired, just print/use the first page:
I hope the school year is ending well for you! One end of year activity I used to perform was to tie dye t-shirts -- I even had a tie-dyed lab coat! I'll post some lab instructions on a later post.
I am selling my lab book "Chemistry on a Budget" at amazon.com for only $20! Check it out:
Each lab is presented with two possible report formats -- both labs use the same procedure but each has a different conclusion -- one with 10 questions to be answered as a conclusion, the other with a full laboratory report required. This gives the teacher the option of what type of report is desired, and each version is designed to be just two pages. This way the teacher can photocopy just one 2-sided page per student (saves paper).
*I'd love to hear from you! Your feedback would really help me to focus on your needs! There should be a "Contact" form below, or click on the "Contact" tab on the top right of this page.
Have a good end of the week!