Periodic Trends

12/17/13

Hey Guys!

At the beginning of class, Ms. Friedmann checked our Unit 6 Review packets. She will check the other homework tomorrow (which is the 4 worksheets on the periodic trends.) Tomorrow morning will be the study session. It will be in the same place at the same time (7AM)

We took a quiz today. All you have to do is put the answers from your packet on a scantron. Please make it up as soon as possible if you were absent. 

We also finished taking notes today which is already posted under the Unit 6 Notes folder.

If you are confused, try reading the textbook. For example, on pages 155-156.

Overall, good luck studying for the test which will be on Thursday!

Study tools:

Next Scribe is...Ambreen A.

Double Replacement Reactions and Solubility Lab

Scribe: Suvd D.

Tuesday, October 30th, 2013

Homework:
Complete the post-lab questions for the "Precipitates Lab", posted in the Unit 4 Labs folder.
Note that for question #2 you only have to pick eight of the precipitation reactions and write only molecular equations for them...we will do net ionic equations for them tomorrow.  

Notes on how to write a molecular/complete ionic/net ionic equation are posted in the Unit 4 Notes folder.

These are different examples of equations that Ms. Friedmann gave us in class.

First of all, Ms. Friedmann explained the video on Juliette's blog. She said that it was an exothermic process which means that the process releases heat. The supersaturated solution has lots of free floating ions that if you put in a little bit of crystal , the other ions start sticking onto the crystal. This is what it looks like after:

Here's Juliette's video:

Fun but Dangerous...
You can make your own supersaturated solution!
All you need is baking soda, vinegar and heat!
But...it can burn your lungs so be careful.
The formula: NaHCO3 (baking soda) + HCH3COO (vinegar)--> NaCH3COO (aq) +H2CO3

Other announcements:
This quarter, Ms. Friedmann wants us to scribe with a new label "Q2 Name". She also wants us to comment on each other's blogs. Lastly, she doesn't want us to tell who the next scriber / blogger is because she wants everyone to check the blog. But shhh....guys we are going to help each other out?  (Sorry Ms.Friedmann! I am the one that doesn't obey.)

Lastly, these are the lab results:

The lab results

Lab results with labels

Label each square as either PPT or NR.

PPT= Precipitated

NR=No Reaction