Boidiesel

Today we learned about how to make biodiesel and how it effects our environment about us. We are also starting our work on our biodiesel video in which we present biodiesel as a good clean source of energy. 

Trends in Electronegativity

Electronegativity of an element is defined to be the tendency of an atom to draw electrons tward itself when chemically combined with another element.

periodic trends

Trends in ionic size

The periodic table is made in a fashion that allows us to be able to easily guess the size of an atom compared to the other elements. This is the trend associated with the periodic table.

ionic size

Energy level diagrams

Think of an electron configuration for a particular element like an address. This will make it easier to understand.

energy level diagrams

Orbitals

Today we learned about orbitals and how they pertain to the periodic table. Each principle energy level has its own type of shape for its orbital.

orbitals

Periodic table activity

For this activity we had to use our knowledge of periodic trends to create our own periodic table from clues about unknown chemicals.

periodic table

Mass percent

These are my notes for the mass percent lecture. 

Spectroscopic analysis of Co and Cu ion

This lab was long and hard. It was time consuming because of all the writing we had to do for this lab. Also the machinery was difficult to figure out.

spectroscopic analyisis

Acid base test

Today's test was one of the hardest tests we have taken all year. I studied for 5 days then the test date was moved back. Which was good because it gave me more time to study. 

Acids and bases

Today we learned about how to determine if a solution is an acid or a base. These are my notes. 

Acid-base reactions

These are the notes I took on our acid base reactions lecture. I have to say it was very difficult but I think I got it down. 

Vitamin C lab

For this lab we had to determine the Vitamin C concentration in all of the juices we were provided. We did this by adding iodine to each solution drop by drop. Until the solution changed color.  The hardest part of this lab was the math. 

Molar mass of unknown acid

This lab was basically the same as the last titration lab we did. The only difference was that the acid was solid not liquid. This cause us to spend more time on the lab due to mixing the acid with water in order us to be able to tirate it. 

Titration lab

This lab was fairly easy compared to most of the labs we have done in the past. First we needed a buret filled with .200M NaOH solution. Then we use the buret to titrate an avid and compare it to the unknown acid to determine the Molarity.