Tuesday, March 15, 2011

Announcements: noneHomework: answer the questions from the lab, finish the graphs

Today we started Unit 12, we did a lab on the heating curve. For the lab we took down the temperature in degrees Celsius every 30 seconds until our ice melted and boiled, then continued to take the temperature for another 3 minutes after boiling.

My data for the lab was:

After we got our data we had to graph what our heating curved looked like. An example of a heating curve looks like this:

After the lab, we cleaned up our stations, and worked on our hw as mentioned above.

11.2.10

Today in class, Mr. Paek went over a lot of important concepts for Thursdays test. He handed out review sheets for unit 4 before a short quiz. The quiz and review sheet went over some of the main ideas like whether or not the certain element will gain or lose an electron, different charges, compounds and chemical formulas.
**Important concepts:
1. Example: Chlorine: Element will GAIN 1 electron to become more stable.
2. Example: Sodium ions and oxide ions: Na2O
3. Example: CaBr2: Calcium Bromide

Some important rules to remember when studying for thursdays tests are the polyatomic ions: ***Sulfate, Nitrate, Phosphate, hydroxide, carbonate, ammonium, bicarbonate

After reviewing and taking the short quiz, we played Ionic Boggle!!! Ionic Boggle (hopefully we can play again!!) is where you try to make compounds with the elements you are given. You play it like boggle the only difference is the letters are now elements!

WEBASSIGN DUE THURSDAY, TEST THURSDAY.
Good luck to everyone on the test!!!! Study hard! :)