pH Lab document

Here is the pH lab handout:

http://docs.google.com/Doc?id=df5pkggb_284qk4bd8


Make sure to do prelab and write procedures in notebook.

pH Scale

September 25

Today in class you learned about the process we call dissolving and you learned how to calculate solution concentration in percent by mass.

Other Vocab to know from today
Solute-Solute Attraction
Solvent -Solvent Attraction
Solute-Solvent Attraction

Solution Concentration:

Mass of Solute + Mass of Solvent = Mass of solution

Percent (by mass) = Mass of Solute/ mass of solution x 100

1 ppm = 1 mg solute/ 1 liter of solution


PowerPoint: http://docs.google.com/Present?docid=df5pkggb_218hj2nth&fs=true


Homework:

Page 83 #8-13

September 18

Today in class, we reviewed our tests. Most of you did not do so well on the ionic compounds portion of the test, so we will retest on this portion on Thursday.

Next we began Unit 1C on solubility.

http://www.scribd.com/doc/308288/September-18

You must know:
1) What is solubility
2) What are saturated, unsaturated, and supersaturated solutions.
3) Be able to distinguish saturated, unsaturated, and supersaturated solutions from a solubility curve.
4) Know that solubility increases and temperature increases
5) Calculate the amount of solute left undissolved in a supersaturated solution, looking at a solubility curve.
6) Calculate the amount of solute needed to make an unsaturated solution saturated.

Homework: Page 82 #1-7 and review ionic compounds formulas and names

September 14

Hi Class,
I will not be in today, as I am in Honolulu on an excursion with the 7th graders. Your retest is scheduled for today and your lab notebooks are due.

Homework: Have a great weekend

September 12

We did the Water Testing Lab today, where we tested for lead and calcium ions in water sample.

Your homework is to get your conclusion done and your lab notebooks turned in no later than Friday September 14.

On Friday you will have a test. Be sure to get any need help on Thursday, as I will be out on Friday.

August 12

Today in class we did the Water Testing Lab. We test samples of distilled water, tap water, ocean water, and river water for the presence of lead and calcium.

Next class: Retest on Unit 1A and 1B

Homework: Post Lab questions. Lab books due by next class.

September 6

Today in class we discussed the Ionic Compounds worksheet.
We also began our prelab for Wednesday's lab on Water Testing, in which we will test for Lead and Calcium in water samples. You must have your prelab, or you will not be allowed to do the lab. Also bring your goggles.
On Monday, we will be retaking Mid Unit 1B test. All who scored less than a B will retest. For those with B's the retest is optional. I will take the higher of the 2 grades.
You are all required to make corrections to your tests and return them to me on Monday.

Have a great weekend\.

August 4

Today in class you took your Unit 1B quiz.

Homework: Ionic Compounds Worksheet.