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UC Riverside APSI-2

7/22 - 7/25

This is going to be my temporary page for information.  I will turn this into a page on chemmybear later in the summer.


 Miscellaneous Handouts:

Contact Information

  • John Annala
    • Twentynine Palms HS
    • jannala@morongo.k12.ca.us
  • Jackie Burneson
    • Richard Gahr HS
    • Jroyer1@aol.com
  • O.J. Cantos
    • Don Antonio Lugo HS
    • ojcantos@yahoo.com
  • Matt Christopher
    • Westview High School
    • westview.chemistry@gmail.com
  • Kelli Gaines
    • Trabuco Hills HS
    • gainesk@svusd.org
  • Lisa M. Gallegos
    • Eagle Rock HS
    • lmg0684@lausd.net
  • Ray Griffin
    • Campbell Hall
    • griffir@campbellhall.org
  • Stacey Hamamura
    • Trabuco Hills HS
    • hamamuras@svusd.org
  • Stephen Iverson
    • Rubin S. Ayala High
    • stephen_iverson@chino.k12.ca.us
  • J.B. Luzar
    • Hillsdale High
    • jluzar@smuhsd.org
  • Stacey MacPherson
    • Heritage High School
    • stacey.macpherson@puhsd.org
  • Melanie Magdaleno
    • Oakwood School
    • themagfamily@gmail.com
  • Ryan McClintock
    • Castle View HS
    • ramcclin@gmail.com
  • Heather Murillo
    • Citrus Valley HS
    • heather_murillo@redlands.k12.ca.us
  • James Pearson
    • Daegu High School
    • james.discgolf@gmail.com
  • Susan Roche
    • Aliso Niguel HS
    • scroche@capousd.org
  • Hao Tiet
    • Calvary Murrieta HS
    • haotiet@yahoo.com
  • Dawn Toth
    • Redlands East Valley HS
    • dawn_toth@redlands.k12.ca.us
  • Greg Zundel
    • San Gorgonio HS
    • gzundel@hotmail.com

Labs from JB

Here are a couple of great lab ideas from JB Luzar.

  • Is Hydrogen Peroxide 3% -- Microscale redox titration that could be used in place of the Guided Inquiry lab in the new lab manual.  The macro-scale lab can stain your burets with KMnO4.
  • Peroxide Lab Teacher Notes -- This is the original lab (dot matrix) with notes on how to make the solutions.
  • Paper Clip Sig Fig Lab -- Weigh larger and larger numbers of paper clips and see that the number of significant figures increases with larger samples.
  • Micro Mole Rockets -- Generate hydrogen and oxygen gas with a continuous variation microscale lab.
  • IMF Attraction Activity -- students draw and cut out molecules and show how atoms attract each other with this cut-and-paste activity.
  • Kinetics Lab - S2O3 vs HCl -- This microscale lab give good data.
  • Water Game -- This is a student-version of the Two Beaker Demo for Equilibrium.  I have a similar activity called the Straw Lab.
  • Equilibrium-LeChatelier's Principle -- This is a student lab using the cobalt chloride equilibrium.
  • Isotopic Pennies -- A nice lab about the mass of isotopes and the fact that the atomic weight is really a weighted average.
  • Triple Point of Dry Ice -- A quick microscale lab/activity where students get to see liquid dry ice.
  • Conductivity Apparatus Instructions -- This is a make-it-yourself conductivity tester... two versions.
  • Conductivity Lab -- more from JB
  • Kinetics Notes -- These are notes about the derivation of the integrated rate laws and about graphical analysis.  These are for when the students want to know where things came from.

Living By Chemistry Information

www2.stetson.edu/mahjongchem/

http://www2.stetson.edu/mahjongchem/

Letter to Mark Case...author of Lab #2

Hi Paul,

  The reaction occurs in steps.  The first reaction is an oxidation reduction reaction where copper is oxidized from the zero state to a  +2 state and the nitrogen is reduced from the +5 state in nitrate to the +2 state in nitrogen monoxide. It may be pointed out that other strong acids such as hydrochloric and sulfuric do not react with copper.

The red-brown gas that appears in the round bottomed flask is caused by the same compound responsible for the red-brown haze that hangs over certain cities, nitrogen dioxide. The nitrogen monoxide reacts with atmospheric oxygen to produce nitrogen dioxide as shown in the second reaction. If the reaction is conducted in a vacuum, the red-brown color should not form. The purpose of adding the water to the acid is to dilute any excess HNO3, which is no longer concentrated due to the stoichiometry of the chemical rxn. This water also stops any further production of NO vapors, making it safe to remove from the hood.

Enjoy, enjoy!

Mark


Quoting PAUL GROVES <PGROVES@fc.spusd.net>:

I have been confused about the equation used to calculate the minimum amount of HNO3 added to dissolve the brass.
I always thought that concentrated HNO3 turned into NO2 and H2O... using that half-reaction, I get a different equation.  Where does the half-reaction that HNO3 turns into NO come from?

 

Also, it states that the teacher will add 50 mL of water to the reacted HNO3 and brass.  I always teach that you should only add acid to water, never water to acid.

We've been having fun trying out that lab.  Thanks for writing it.
--Paul

Scale of the Universe 2

Here is that cool app that allows you to zoom in and out to explore the scale of the universe.

http://htwins.net/scale2/

scale.jpg

Stacey's Evernotes Notes

 

From Evernote:

resources and ideas

A Mole of Moles by Randall Munroe

Demo Idea

http://www.youtube.com/watch?v=R9uvIhgVz04&feature=share&list=PLDA2F73D8F98CBD80

This is a link to Steve Spangler demonstrating Super Heated steam.