Miller,+Calvin

I think I like the first graphic organizer. This one shows, in a simple manor, the difference between Mixtures, Compounds, and elements. However, the second organizer is beneficial, to show that there are two types of matter; Mixtures and Pure Substances. Mixtures break down into Heterogeneous and Homogeneous, and Pure Substances break down into Compounds and Elements. Within the first organizer, the pictures help me understand, because i can physically see the difference between the particles. I don't like the third organizer. At all.
 * Classification of Matter**

I really like the Chromatography, I think its an interesting way to view the different pigments. Moreover, I believe it is an interesting way to see just what chemicals we are putting in our bodies. I have a question however, Does the solution matter for chromatography? Last year in Honors Bio, we used tap water, today we used salt water, and I remember doing this as a project for my chemistry set when I was younger, and I used a mixture of different chemicals.
 * Separation of Matter**

When I go to the doctor, they put me on the scale - for what reason, I don't know - but they never seem to fail at this crucial process...I can only assume that if they were to fail at recording my girth there would be some negative repercussions. Measurement is quite crucial in our society, for example, I am sure I would not be the only one who would be quite heated if I received only 3/4 of a gallon of gas when I paid for a full gallon. If diabetics were to purchase 50mL of insulin, and they only received 37mL, someone would soon be slipping into a diabetic coma.
 * Why Is Measurement Important To You?**

If gas goes to $6 a gallon like some people think it will, I'll also want a full gallon for my money!!!!! MW

I am always nervous when i pass through security checkpoints at the airport...no, not because i have random explosives strapped to my leg, but because i fear the radiation that the x-ray cameras put out. Some studies have shown extensive amounts of radiation can cause types of cancer. Now don't get me wrong, there is only a little bit of x-ray radio waves escaping from the security equipment, and at that level, no harm could be done. However, if you are a Business person, who flies to and from work daily (Maybe not so much anymore, but back when the concord was in service......) the radiation could possibly be harmful.
 * Airline Security**

Calvin, Interesting you should mention that. You are probably right to not worry about the harmful effects of x-rays. As it happens people that fly a lot do get an extra dose of radiation - but it's from the sun. Being at high altitudes even in an airplane exposes you to more of the sun's radiation. 5 stars. BTW did you respond to anyone else's post? MW

Mr. Williams, No i did not.CM

I like moles as much as the next person, don't get me wrong, HOWEVER devoting an entire day to it, I think that thats a bit excessive. I understand that it is to generate interest in science, but i think kids should like science on their own, not because of some farcical number replicating the amount of atoms in relation to weight and size. The mole is an interesting number; six-hundred and two sextillion...quite a hearty sum.
 * MOLE DAY**

Calvin, The number is hardly farcical! It is one of the standards of measure in science. MW

Mr. Williams, Its Silly. CM

The Explosion in the Sugar Factory was tragic. Stoichiometric Relationships are EXTREMELY important in the the of the reaction. Obviously the more of the total reactants, the more of the reaction will take place. I find it interesting that 420 micrometers is considered explosive.
 * Sugar Dust Explosion.**

And now for a lesson on ATOMIZED PARTICLE EXPLOSIONS!!!! Atomized Particle Explosions or APE's for short are not necessarily a new discovery. The basic principle is that the smaller substance is, the more surface are said particle has. the more surface area the particle has, the less energy it takes to burn, and the faster it does so. SO, instead of taking a gallon jug, and filling it with gasoline, and putting a soaked cloth in the hole to trigger an explosion, it would be MUCH more effective if one were to place the gallon of gas on top of a high order explosive. The Idea is that the force of the explosion forces all of the particles of gasoline in different directions creating a flammable mist, then the heat catches up to the particles and ignites the flammable cloud. The same thing can be done with a bag of flour on top of an explosive. Some reports say that the force if the explosion is so great it has been know to blow the sides out of medium sized buildings, as opposed to just the catching fire of the building.

Calvin, Amazing post. This really shows your intellect. Keep it up!!! MW