Saturday, December 11, 2010

My 10 ions for my group (Daniel and Me)

Shown below is my word file containing all the delicious ions i found hiding in my pantry.  Check these out!

Item Name
Barbecue Lays potato chips
Salt/sodium chloride
Armour Vienna Sausages
Sodium nitrate
Kraft Easy Mac original
Potassium chloride
Mrs. Baird’s 7-grain Bread
Calcium sulfate
Ranch Style Black Eye Peas
Sodium phosphate
Ranch Style Black Eye Peas
Sodium nitrite
Ranch Style Black Eye Peas
Calcium chloride
Nestle Hot Cocoa
Potassium phosphate
Tropicana Orange Juice
Calcium hydroxide
Sura Lee Hot Dog Buns
Ammonium sulfate

Wednesday, November 10, 2010

Mid Term Review #11

11) What is an excited state for an atom?  How do they occur?

- An excited state of an atom is when an atom gains energy or electrons and jumps an energy level.  This state is usually unstable however.  These occur when energy is gained by an atom.  An example of this is neon lights.  They produce light because the atoms in the Neon, when given energy through an electric current, become excited.  Yes quite exited indeed.

Monday, October 4, 2010

Rutherford's Gold Foil Experiment

Have you ever wanted to prove your teacher wrong?  This was actually NOT the intention of Ernest Rutherford when he accidentally proved his teacher and mentor wrong.  Rutherford, a New Zealand native, had spent many a year as a student of J.J. Thomson and fully believed his "plum pudding" theory about the atomic structure.  In this theory, all particles in the atom were evenly distributed like plum pudding.  The image below shows this diagram.
To prove his teachers theory, Rutherford set up an experiment.  First, he set up a source of alpha particles that emitted them in a beam.  Rutherford also discovered these alpha particles which are basically high speed, positively charged, helium nuclie.  He then shot these particles at a thin piece of gold foil which was surrounded by Fluorescent screen that would detect the alpha particles.  The set up looked something like this.

What Rutherford expected, and what would prove Thomson's theory would be the alpha particles passing through the gold foil (made up of plum pudding molecules right? phhhht! noooo) with little or no    reflections.  What he discovered, however, was that the positively charged alpha particles would every so often hit something in the gold foil that made them bounce in huge reflections!  What they were hitting is the positively charged nucleus of the atoms in the foil.  To understand this more try this interactive activity on this link.  Watch how the more alpha particles that are introduced, the more are reflected from the nuclei.
Interactive Activity
You may be asking yourself, "Why does this matter?"  This is actually one of the most important moments in the history of SCIENCE!  This is the event that caused Rutherford to come up with a new model for the atom.  Without the gold foil experiment we might still be thinking we're connected by plum pudding like atoms.  Rutherford is the father of the modern atomic structure and this experiment helped start it all.
by: Paxton Swisher
Works Cited 
“About Rutherford’s Gold Foil Experiment.” eHow. N.p., n.d. Web. 3 Oct. 2010. <‌about_4569065_rutherfords-gold-foil-experiment.html>.
The Encyclopedia of Science. N.p., n.d. Web. 3 Oct. 2010. <‌encyclopedia/‌R/‌Rutherfords_experiment_and_atomic_model.html>.
kem korner. N.p., n.d. Web. 3 Oct. 2010. <‌2010/‌07/‌rutherfords-gold-foil-experiment.html>.
Molecular Expressions. N.p., n.d. Web. 3 Oct. 2010. <‌electromag/‌java/‌rutherford/>.
reich-chemistry. N.p., n.d. Web. 3 Oct. 2010. <‌stephen.gasecki.timothy.graham.atomichistory.fall.2009>.

Thursday, September 9, 2010


Physical Properties:

Phy 1) The color of the banana peel is yellow, which is easy to see in the picture above.  This is why it is my first physical properties.

Phy 2) The soft texture of the banana peel is the second physical property because the hardness of an item is very useful.

Phy 3) The banana peel is not conductive, the third physical property.  This is proven in the picture above, showing a banana peel hooked up to a battery and light bulb in a circuit.  If the peel was conductive then the light bulb would be lit up.  Since it is not then I have proved it is not conductive.

Phy 4) The banana peel is not magnetic.  This is the fourth physical property and is proved in the picture above.  My locker magnet is placed by it but no pull towards each other is felt.  This proves the peel isn't magnetic.

Phy 5) The mass of the banana peel is the last physical property.  The mass is 15 g.  I determined this number be taking the total mass of the banana which is 120 g.  I got this info at this site.  I then divided it by 8 due to the info at this site that said that a banana peel is 1/8 the mass of the banana.  Therefore the mass is 120/8 = 15.

Chemical Properties:



Chem 1) The first chemical property is the ability of the banana peel to decompose.  As you can see in the before and after pictures above, over the course of 24 hours the banana peel already was starting to decompose.  If you look closely you can see in the after picture the peel on the inside is a dark brown.  This shows the beginnings of decomposition.

Chem 2) The second chemical property is the ability of the peel to light on fire.  It is plain to see in the picture, the banana peel is starting to light.  Although it won't burn by itself,  it most certainly will light if thrown into a fire.

Chem 3) Another chemical property is the corroding ability of the banana peel.  In the series of pictures shown above I put vinegar on the peel.  Although no changes are visible, there is a distinct smell which is a sign of a chemical change.  I'll leave this one for the pro's to decide on.

Chem 4) Yet another chemical property is that the banana peel doesn't react with water.  As shown in the above picture, there is no reaction with the water and the banana peel.

Chem 5) The last chemical property is the banana peels inability to rust.  Rust is caused by a chemical reaction between iron and air.  Since there is insufficient amounts of iron in the banana to rust, it can't.

I hope this journey through the universe of the banana peel has been insightful and interesting.

Wednesday, September 8, 2010

A Simple Banana Peel

Once upon a time, I chanced upon a banana peel and I thought to myself, "Hmmm, that banana peel sure is cool.  I bet I can name 5 physical and 5 chemical properties of it."  If your reading this blog then you're about to find out if I can.  SPOILER ALERT : I can.