Thursday, 1/28

Review for tomorrow’s test. No handouts or notes.

Homework:

• Webassign 12 – due today!
• Titration lab report – due Monday

Wednesday, 1/27

Time to work on the lab and ask questions. Two most common errors: forgetting the base was a hydrate, and forgetting to do stoich!

Homework:

• Webassign 12 – Due tomorrow!
• Titration lab report – Due Monday

Tuesday, 1/26

Titration Lab! This will be the first one for the Q3 Lab Portfolio. Google Sheet for data and Q3 Portfolio doc have been shared – note that I started a new shared folder for Semester 2 –  I’d suggest going into Google Drive and either adding that folder to My Drive or starring it for easy access.

Handouts:

• Lab handout – get a copy from me or from the Lab Handouts folder in the Schoology group

Homework:

• Webassign 12 – Due Thursday

Monday, 1/25

Notes on stoichiometry with solutions and the titration experimental technique.

Files Needed:

• Notes – Solution Stoichiometry

Completed Notes:

• Completed Notes – Solution Stoichiometry – Marr

Homework:

• FOR TOMORROW: Prelab video and quiz
  • In the Schoology Course there is a folder for Titration Prelab
  • Inside the folder, watch the video and then take the quiz
  • Due before school tomorrow
• Webassign 12 – Due Thursday

Friday, 1/22

Lab activity on making solutions and dilution! The lab activity handout was due at the end of the period.

Handouts:

• Dilution lab handout – see me for a copy if you were absent

Homework:

• Webassign 11 – Due Monday 1/25

Thursday 1/21

Notes on dilution – continuing with same notes file from yesterday.

Completed Notes:

• Completed Notes – Concentration and Dilution – Marr

Homework:

• Webassign 11 – Due Monday 1/25

Wednesday, 1/20

Happy Second Semester!!

Continuing with Unit 8 – notes on concentration and molarity.

Files Needed:

• Notes – Making and Quantifying Solutions

Completed Notes:

• I’ll post after tomorrow’s lesson as they go together

Homework:

• Webassign 11 – Due Monday 1/25

Friday, 1/8

Work day to continue working on the reactions for the PPT lab.

Homework:

• Your finished complete ionic and net ionic equations for each reaction (combinations where you got a PPT) must be entered into Webassign – Due Weds. 1/20.

Thursday, 1/7

Post-lab analysis. The goal is to determine the identity of the precipitates for each combination that gave a reaction. Once the list is complete, watch the video on writing reactions, and then get started writing the reactions.

General process (note I’m leaving out charges here just because this editor can’t do superscript/subscript):

1. For all boxes in all sets where you had a PPT, write the new combinations of ions that might be your PPT.
   1. Example: For the intersection of Ba & Cl with Na & CrO4, new combinations could be Ba & CrO4 or Na & Cl.
   2. If a particular combo is already on your list of possibilities, there’s no need to add it again – the goal is to generate a list of unique combinations that might or might not be causing a solid.
2. Once you have that list, next is to determine which pairs result in solids and which don’t. This behavior for a particular pair of ions is universally consistent – either  they always do, or they always don’t.
   1. Turns out you can’t figure out pairs that do directly – you have to find ones that don’t, and use process of elimination.
      1. Example: Na & Cl also show up in the intersection of Ba & Cl with Na & NO3. There was no PPT there, so Na & Cl don’t make a PPT. Therefore, in my first example, it must be the Ba & CrO4 that made the PPT.
   2. Any pairs you determine make a PPT, put on one list (Yes). Any pairs you determine don’t make a PPT, put on a different list (No).
   3. Your Yes list is the PPTs for your lab.

Handout needed:

• Get the handout from me tomorrow, or download the handout from Schoology

Homework:

• For tomorrow, finish building list of PPTs and watch the video
• Lab Notebook Q2 due tomorrow!

Wednesday, 1/6

PPT Lab – get data and pictures from your lab partners!

Please bring your earbuds tomorrow!

Homework:

• Lab Portfolio Q2 due Friday 1/8
• Unit 6 test corrections done by Friday 1/8
• Unit 7 test corrections done by Tuesday 1/12