Chris Schrempp, B.Sci, Pharm.D., M.Ed

Chemistry Instructor, Los Osos High School
6001 Milliken Ave,  Rancho Cucamonga, CA  91737
Room D-110   School Phone: (909) 477-6900  ext. 2410      email: cschrempp@charter.net

"I am among those who think that science has great beauty.  A scientist in his laboratory is not only a technician; he is also a child placed before natural phenomena which impress him like a fairy tale".  Marie Curie (1867-1934)

To view videos, click on the picture.
More videos available on the "Chemistry Demo Videos" tab at left, or by visiting ExploScience.com

Exploding Pringles
Using hydrogen, we send a Pringles can skyward while leaving behind the chips!  Definitely, a great way to serve chips at the next party.
[click to view]

Synthesizing Water
Synthesizing water in a balloon can be educational and LOUD at the same time.
[click to view]

Holiday Snow Ballistics
What better to ring in the Holiday Season than a little chemical white stuff ejected with a pneumatic cannon.
[click to view]

The Mentos Geyser
Dramatic footage of the interaction of aqueous CO2 with nucleation sites on Mentos candies.   As seen on the Mythbusters, 
(Click to view)

TV (Toroidal Vortex) Machine
A cardboard box, plastic bag, and fog machine can make a great toroidal vortex (smoke ring) machine!
(click picture to view)

Acetylene-Powered Buckets
The reaction of calcium carbide and water  is used on Halloween to propel cans, buckets, and even pumpkins skyward.

See more of the top videos at                                         , including:

Elephant Toothpaste Catalysis
In this classic chemistry demonstration potassium iodide catylizes the decomposition of hydrogen peroxide.
[click to view]

Meissner Effect
Supercool a superconductor and you have a zero-electrical resistance medium that can levitate a magnet!
[click to view]

Countdown to 2008 AP Chemistry Exam:

Mercury Beating Heart
Rythmical oxidation reduction oscillations give life to a mercury pool. A must-see
[click to view]

Carbide Cannon 2007!

Click Picture to View

Meets Wednesday mornings, 7:15 AM in Room D-110

AP Chemistry Bulletin Board    May 1, 2008

Thermite Reaction
This classic and historical reaction reaches temperatures of over 2400 degrees Celsius (4500 F).  Used in welding and the military.
[click to view]

Liquid Nitrogen Frozen Digits
What happens to fingers when you freeze them in liquid nitrogen and then smash them with a hammer?
[click to view]

Microwave Plasma
Making the 4th state of matter in a nuclear oven
[click picture to view]

National Chemistry Week 2007:
The Many Faces of Chemistry

So you think chemistry is just for geeks?
This new section investigates some of the many career

opportunities based in chemistry.  From Patent Attorney, Medicinal Chemist, and FBI Special Agent to Cosmetic chemist, Fire Department Administrator, and Astronaut - the field of chemistry is hot, promising, and wide open!

Educators: Chemistry demonstration videos, demonstration manual, DVD's and more available at:

AP and Prep Chem Extra Credit
Up to 25 points/semester in empty printer ink cartriges (5pts each; no Epson or Brother)

The Reaction of  Phosphorus and Oxygen
click picture to view

Nitric Acid & Copper
A classic Redox Reaction.
[click to view]

AP Exam Retakes HERE
(take exam, print your score, turn in to me - you will receive up to 1/2 of the recovered points)

The Spontaneous Combustion of White Phosphorus

click picture to view

The "Wet" Dry Ice Lab Activity.  
Students of Mrs. Haus and Dr. Schrempp put dry ice in plastic pipets and seal them to see the triple point of carbon dioxide.  They also learn a lesson about getting wet!
[Click piture to view video]

The Homopolar Motor
click picture to view

Oxidation Bangs and Flashes
Potassium permanganate reacts with hydrogen peroxide to produce oxygen, which combusts with ethanol, producing loud pops and bangs.
[click picture to see full video]

Predicting Reactions
Tutorials:
Classifying & Predicting Reactions
Protocol for A/B and Precip Rxns

Testing the Pressure Rating of a
2-L PET Bottle
Kind of a "trash can depth charge"...
The things a week of standardized state testing can drive us to do... [click picture to see full video]

Phosphorus Oxidation
Potassium chlorate is used to provide oxygen in this dramatic demonstrations.  [click picture to view]

Ion Flashcards
Solubilities Flashcards

Ion/solubilities/activity series reference sheet

Link to Printable AP Study Cards

Egg-splosion
An egg filled with hydrogen gas provides a great variation of the standard "water reaction"
  [click picture to view]

The Los Osos Chem Club recently perfomed a "55-Gallon Atmospheric Can Crush" during both lunches.
Click on the picture to view a video of the dynamic experiment!

Released Multiple Choice Exams
1999
1994

Review Powerpoints:
Molecular Geometry, Hybrid Orbitals
Organic Naming