Thursday October 14, 2010

Today, Mr H began today's lesson by going over Matt's blog and pointing out some of the specifics that he had included such as how to do conversions and how to find the average atomic mass from multiple isotopes.

Mr. H then went over what was included in tomorrow's 90 point test. The test includes:

1) 33 multiple choice questions
2) a writing section
         a. writing formulas and names of ionic/molecular compounds
         b. a math problem like #3 on the bottom of page 14

After explaining the contents of the test, Mr. H told the class 6 different ways to study for this test. These included:

1) Looking at students' blogs from unit 2
         a. this is a good place to look, because many students have included specific formulas as well as methods on how to name ionic and molecular compounds

2) Looking at Delicious bookmarks
         a. this is also another great place to look, because not only can you study from your bookmark, but if you need help in other things from unit 2, you can study from the bookmarks done by other students

3) Looking over web assigns from unit 2
         a. This is one of the best places to look because not only can you study the answers that you got correct, but you can also study the problems that you got wrong.
                         I. in order to see the answers to the ones that you got wrong, click on the 'view key' box that is located at the top of every web assign. This box is there now, because once the due date passes for every assignment, that box pops up so students can see the answers to the questions they got wrong.

4) Looking over the unit 2 packet
          a. this is a great place to look if you are lost on certain things or if you want more practice because there are many pages filled with practice problems as well as explanations on everything in unit 2.

5) Doing the practice test that can be found on moodle. Here are the steps:
                a. Go to moodle and sign in
                b. click on Honors chem meta course
                c. under the "worksheets" tab, click on unit 2
                d. now click on the document that contains that specific thing that you want help on or want to study more. Here is the link if you are having difficulty finding it: http://gbs-moodle.glenbrook225.org/moodle/mod/resource/view.php?id=1045

6) Rereading the sections from unit 2
               a. this can be very helpful, but if you don't want to reread these sections, then i would recommend doing #s1-5

^^^^^^^ this is what the meta course page looks like after you've done all the steps ^^^^^^^^^^^


After explaining to us all the multiple ways to study, Mr. H had the class open their unit 3 packets to page 1. Mr. H went talked about all the wild conversions that we did (i.e. converting stinkups to dollars). Mr. H went on to explain that its important to be able to convert numbers no matter how wild the units are.

Mr. H then worked with the entire class to solve #4 on page 2. He explained to us that when you cancel out units, you need to make sure that you cancel the same units that are in the numerator and denominator of the problem. After canceling these units, you would multiply all the numerators together and then divide by each denominator. Here is what it would look like:

6 dopes= 11.8 napos  x 2.9 bicnics  x 17.8 blurches  = 25.4 blurches 

3 dopes      4 napos              12 bicnics

After doing this, we turned to page 4 of our unit 3 packets, and Mr. H explained to the class how atomic mass and atoms are related. For instance, if you had 24.02 amu of carbon, you would have 2 atoms of carbon. this is because 1 atom of carbon is 12.01amu. If you were to double 12.01, you would get 24.02. This is how you would solve for the number of atoms in an amu of a certain element.

For most of the day, Mr. H had gone over what the test was going to look like; that way we would be prepared for the test. Be sure to STUDY!!!!