Friday, April 25

Class Blog for Friday, April 25 :)

A note for: Melissa Frankie EJ and Kate

What we did in class today:
- Mrs. Friedmann put us in small groups and gave us a similar problem to the quiz yesterday. We worked through it and are beginning to understand the concepts of determining the pH of a salt solution. Be ready to perform similar operations to that of the quiz from yesterday, since the quiz didn't count for a grade. This is a learning process:) 
- After that, we went over the quiz. 

Next Blogger: Kevin J
Homework: There is a worksheet, and a webassign on buffers 

Enjoy your weekend!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Class Blog 4-22-14

Hey Honors Chemistry! (Pulling a Mrs. Friedmann) So sorry this is late. I really have no excuse, I just totally forgot.

What We Did

• Checked in homework from last night
• Went over pages 8 and 9 (Our homework from last night)
• Had a lesson on finding the pH of salts.
• The lesson is recorded and should be posted on moodle
• We didn’t get to buffers, so that will be taught on friday

Homework

• 2 webassigns due Wednesday at midnight
• Pages 10 and 11 in the Acids and Bases Packet
• Study for quiz on Thursday.
• We will have VERY short periods on Thursday, so it will be a short quiz.

Who doesn't like a good joke?

1. Girl, you’re a 10.

On the pH scale, because you’re BASIC!

2.

Next Blogger: Allie Boland

Blog 4-21-14

Welcome back, I hope everyone had a great 3 day weekend.

-We started today by checking in pages 6-7 in the packet.

-We then grabbed a packet of pages 9-11 that should be stapled to the current packet.  (moodle here -->Part 2)

Reminders

-Nothing in this unit is new, it is review just in the form of acids and bases

Review

pH= -log[H+]
pOH= -log [OH-]
pH+pOH=14
[H+]=10^-pH
[OH-]= 10^-pH

pH<7 = Acidic

pH=7 = Neutral

pH>7 = Basic

Strong Acids: HCl, HBr, HI, HNO3, H2SO4, HClO4

Strong Bases: NaOH, LiOH, KOH, Ca(OH)2, Sr(OH)2, Ba(OH)2

Notes

-Percent Dissociation

     -What percent of the original chemical undergoes dissociation?

     -Change (or X found in equation) divided by the original concentration.

-Conjugate Bases and Acids (VERY IMPORTANT)

     • The conjugate base of a weak acid tends to form basic solutions in water. 

     • The conjugate acid of a weak base tends to form acidic solutions in water. 

     • The conjugate base of a strong acid has neither acidic or basic properties. 

     • The conjugate acid of a strong base has neither acidic or basic properties.  

Homework

-Finish Pages 8-9 of the packet

-Try #34 on page 9 for possible extra credit

-2 webassigns due wednesday night

next blogger is... Melissa

April 17, 2014

Hey y'all!

What we did in class is that first, we did the quiz.
Whoever didn't take the quiz, make sure to make up the quiz when you can!

Next, we went over some problems in the Acids and Bases packet.

NEED TO KNOW FOR SOME OF THE QUESTIONS:
pH= -log[H+]
pOH= -log [OH-]
pH+pOH=14
[H+]=10^-pH
[OH-]= 10^-pH

Homework: page 6 and 7 in the Acids and Bases packet.

Good luck y'all and have a great weekend!!!!!!

The next blogger will be Connor Hartigan.

4-16-14

4-16-14

Today, we started class by going over the quiz.

Heads up! There will be a quiz on an ICE problem tomorrow. Be ready for anything, I suggest. There is also a web assign due tonight as per norm.

After that, we went over the homework.

Two important notes:

-In these ICE problems, the concentrations of H3O+ and OH- are very important!
-Small zero rule is always a good choice! (btw. In the small zero rule, you take out the x that is either being added or subtracted)

We went over 9a and 10a.
9a. Concentration of H3O+ should be .000035
10a. Concentration of OH- should be .003

Mrs. Friedmann will post up the key on Moodle.

On that note.
GOOD JOB HONORS ENGLISH STUDENTS! WE MADE IT!

Next blogger will be Elaine Sine.