3.15.11

Announcements: Our test for this new section will either be on Friday the 25th, or Thursday the 24th depending on which day we have a Chem day. Mr. Paek also informed us that we only have 2 more major sections and then we're home free, which is extremely exciting.

In Class: Today in class we did the Heating Curve Lab:

Items Needed: Beaker filled 1/2- 2/3 way with ice, hot plate/burner, thermometer in Celcius.

Procedure: We took a beaker filled with ice cubes and put it on a hot plate/burner. We then every 30 seconds wrote down the temperature of the water at the time. After the ice had melted you were still supposed to write the temperature, up until 3 minutes after the water had started to boil. When you're done with this, you need to make sure that you write down the temperatures and times. Then you needed to answer the usual questions on the sheet and make a graph with the time on the X-Axis and the temperature Y-Axis. (Reminder: Have a title for your graph, and name the x and y axis. Mr. Paek said he'd be grading these for accuracy)

Homework: Finish the graph and answer the questions!

9.28.10

Homework:
Read pages 101-106 in the Chemistry Text Book. There is no question today.

Class Today:
The lab today was called the "Black Box Lab." You went around the lab stations trying to find out the blockade in the black circle container. It was filled with a bead and you had to figure out the blockade without opening the box. After you felt confident in your answer you had to write the numbger of the black box down and then draw what you thought the blockade was. It was extremely confusing and difficult, often leading to extremely odd answeres from some of the class members.

This however was an extremely amazing metaphor for scientists Dalton, Rutherford, Bohr and Thomson whom all tried to decide what the shape of an atom was. They didn't have any microscopes that could see anything that tiny. Hence, the "Black Box Lab."

Reminder:
There is going to be a quiz on all four of these scientists soon. Do the worksheet assigned today that you can use on the quiz. Take notes from the four sheets that Mr. Paek gave us and you'll be good to go.

Also, the test is on Oct. 8th and the Lab test is on Oct. 11th.

Plus, if you want to retake your Lab Test, then tell Mr. Paek what day and period you're coming in.

The next scriber will be Kaylee.