Main AP Chemistry Lab Page – 2013-2014

This is the main page for Lab Chemistry, started in the spring of 2013 and using the book Illustrated Guide to Home Chemistry Experiments and more when we finish.

Link to page about reports about meetings and what we did

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Best Resources and Websites:

Wikispace for AP Chem teachers, lots of lectures, videos and worked problem sets – http://apchemistrynmsi.wikispaces.com/home

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Schedule

Tuesday, October 8th, 2013

– Start on Section 7, Solubility and Solutions. We will try and do labs 7.1, 7.2, 7.3 and 7.4. Please read through the labs and get a sense of the general procedure and concepts before coming to lab (or write out the procedure in your lab notebook if that helps).
Lab 7,1 – make up a molar solution of copper sulfate pentahydrate
Lab 7.2 – make up a molal solution of a solid chemical (potassium ferricyanide – 18 grams). See wikipedia page for potassium ferricyanide
Lab 7.3 – make up a molar solution of solid chemical (HCl)
Lab 7.4 – make up a mass to volume percentage solution, need ethanol and phenophthalein powder

Extra reading and online resources: –Play with these three simulation from pHet:

Concentration

Click to Run
Molarity

Click to Run
Salts & Solubility

Click to Run
Sugar and Salt Solutions

Click to Run

 

Try out all the different settings and play with the different toggles and reactants – no questions and no problems right now. If the embedded links don’t work, you can also go directly to the pHet page:
Concentration Simulation – http://phet.colorado.edu/en/simulation/concentration
Molarity simulation – http://phet.colorado.edu/en/simulation/molarity
Salts and Solubility Simulation  http://phet.colorado.edu/en/simulation/soluble-salts
Sugar and Salt Solutions – http://phet.colorado.edu/en/simulation/sugar-and-salt-solutions

Some lectures about Solution Chemistry by a chemistry teacher named Rene McComick – optional of course! Let me know how good they are:

Lecture 1 – http://vimeo.com/22449436
Lecture 2 – http://vimeo.com/19543775

Lecture on Types of chemical reactions and Solution Stoicheometry – http://vimeo.com/14835315

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Tuesday, October 22nd, 2013

Since we didn’t have time to actually do the labs scheduled for the last lab session, we will do them this time:

Lab 7,1 – make up a molar solution of copper sulfate pentahydrate
Lab 7.2 – make up a molal solution of a solid chemical (potassium ferricyanide – 18 grams). See wikipedia page for potassium ferricyanide
Lab 7.3 – make up a molar solution of solid chemical (HCl)
Lab 7.4 – make up a mass to volume percentage solution, need ethanol and phenophthalein powder

These are short labs, basically calculating how much of the substance, and then making the solutions.

If there is time, we can start on the prep work for the next three labs, to be done on October 29th:
–Lab 7.5: determine concentration of a solution with visual colorimetry (need spec)
Start Section 8 of lab book
-Lab 8.1: determine molar mass by boiling point elevation (need sucrose and salt)
-Lab 8.2: determine molar mass by freezing point depression (sodium chloride)

Actual:
— we spent time on the concepts of molarity and molality, going over the calculations and doing problems until we all got it.
— Boys also finished up 7.2, and 7.3

Tuesday, October 29nd, 2013 (substitute for Nov 5th)

Plan:
— Finish Lab 7.4 – make up a mass to volume percentage solution, need ethanol and phenophthalein powder
–Lab 7.5: determine concentration of a solution with visual colorimetry (need spec)
Start Section 8 of lab book
-Lab 8.1: determine molar mass by boiling point elevation (need sucrose and salt)
-Lab 8.2: determine molar mass by freezing point depression (sodium chloride)

Resources for Learning:
Boiling Point Elevation and Freezing Point Depression
http://group.chem.iastate.edu/Greenbowe/sections/projectfolder/flashfiles/propOfSoln/colligative.html
Vapor Pressure
http://group.chem.iastate.edu/Greenbowe/sections/projectfolder/flashfiles/propOfSoln/vp3.html

-Lab 8.3: Observe the effects of osmotic pressure (need celery)
-Start Section 9 of lab book:
-Lab 9.1: Observe a composition reaction (need sulfur, iron filings, concentrated HCl)

Tuesday, November 12th, 2013 (tentative – extra session)

-Lab 9.2: Observe a decomposition reaction (need sodium bicarbonate)
-Lab 9.3: Observe a single displacement reaction (need to get iron nail, aluminum granules)

Tuesday, November 19th, 2013

Tuesday, December 3rd, 2013
Tuesday, December 17th, 2013
Tuesday, January 7th, 2014
Tuesday, January 14th, 2014 (extra session – tentative)
Tuesday, January 21th, 2014
Tuesday, February 4th, 2014
Tuesday, February 18th, 2014

 

 

 

 

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