Friday, November 20, 2009

Bond Types

Lately we have been learning about different bond types. There are single bonds, double bonds, and sometimes even TRIPLE BONDS! I still don't really get triple bonds though...single bonds are the easiest and double bonds are pretty understandable. We've done a lot of worksheets that help us learn about bonds. What I remember most is HONC because my table name was HONC1234! I love that; it reminds me of a goose or duck! We've been doing Lewis dot structures too! those are pretty easy but it takes me a moment to think of where everything is supposed to go =P We have a lot to memorize for this unit I don't know how I'm going to do it...but somehow I will manage! Hopefully...

Citronellal

My molecule for the project is citronellal. I wanted citric acid because I like oranges and lemons and other citrus fruits, but it was taken. So, I settled with citronellal since it has to do with lemons which is close enough to citric acid. It reminds me of my lemon gum so I'm thinking there might be citronellal in my Orbit Lemon-Line gum but I'm not sure it's edible...this is the point of this project though to find out more about a certain molecule! I need to get working on this this weekend since it's due next week!

Tuesday, November 3, 2009

Ionic Compounds and the Electromagnetic Spectrum

Last week we learned about naming ionic compounds. There is a cation and an anion. The name of the cation, the metal, goes first and the anion, the nonmetal, goes second with the ending -ide. It also has to balance out to zero. There are two types of these compounds, Type 1 and Type 2 binary compounds. Type 1 binary compounds are your regular metals that will only have one charge and are specific. Type 2 binary compounds' cations have more than one possibility for their charge and are named by using the Roman numeral of their charge.
Also, last week we did a lab that had to do with the visible spectrum and the absorbancy of light at different wavelengths. We messed up on our data, but it was sort of fun changing the test tubes in and out of the machine. Monday we went into the library to make graphs of the data we got from the lab; 2 line graphs and a pie chart! Then we had to answer some questions that were hard, but got help on today. I'm going to miss out on doing the review games on Thursday because of LEAGUE CHAMPIONSHIPS =D and then the test is on Friday...hopefully I'll do well =)