Moyer,+Ian

I thought the first classification graphic was the most helpful. The pictures themselves helped me to understand how to classify matter. I think this graphic organizer is easier to understand and can be used more quickly. The first organizer is also more specific in explaining how the matter is classified. I thought the second organizer was much less complex and therefore more difficult to understand. It does not explain as thoroughly as the first how to classify matter into hetero and homogeneous. If i had to chose one of these organizers to help me classify matter, I would have chose the first one. The third graphic organizer used only the one example of human blood. This made it difficult to comprehend the general idea of classifying matter. Given the choice of any of the three graphics I still would've chosen the first.

Previous to watching this video, I had no idea how crude oil was changed into the many different oil products that are used everyday. I learned that distillation is the process used to do this. Distillation uses heat to vaporize liquid oil and separate the different bi-products based on their boiling points. I found it interesting to see how the same process used to make illegal "moonshine" is used everyday to make one of the most widely used and sold products in the world, gasoline. Because of this, distillation is one of the most important processes in the world. Without it there would be no gasoline, oil, jet fuel, or road tar. Distillation is a process that has much to do with chemistry and therefore pertains to this class.

Measurement is important to me in many different aspects of life. Measurement is used in almost everything everyone does. For example, in the soccer that I play every day after school, measurement is what keeps the players inside of the field. Measurement was used to make the boundaries of the football field that I watch on television. My Mom uses measurement every night to prepare meals for us to eat. When someone gets sick, they measure medicine in a cup to make sure they take the right dosage. So, without measurement, life would be much more difficult.

I agreed with the statements and ideas proposed in this article. Avogrado's Constant is a very good idea. By having the accepted weight of a kilogram in the form of an equation, people everywhere can use the international standard at all times. This makes conducting experiments using this standard weight much easier. Also, there are no natural effects on an equation, so, unlike the original weight standard, Avogrado's Constant cannot be decomposed and become inaccurate. This new method of keeping the international standard is safer for the scientific community and should be used in the very near future.

Airline Security is very important to the safety and well-being of airplane passengers and staff in the United States. September 11, 2005 is a perfect example of that. In that fateful day, there clearly weren't enough security measures in place. Terrorists got through security and killed tens of thousands of Americans. This was a tragedy that no American will ever forget. But what some rushed, hurried, or simply impatient airline passengers do forget is the importance of airline security. Without it who knows how many more attacks would've happened sine 9/11. Many people complain while waiting in long security lines at the airport, but what they should really be doing in my opinion is thanking the TSA workers there for their safety.

Mole Day is a day on which the world celebrates the concept of a mole. A mole of any material ia 6.02x10^23, or sextillion of that material. Mole Day was created "to foster interest on chemistry". It is a fun holiday celebrated in schools and chemistry classes all over the U.S. One facet of the mole pertains to the mass of one mole of any material. One mole of any molecule is equal in grams to the atomic weight of that molecule. For example, oxygen's atomic mass is 16, so one mole of oxygen (6.02x10^23 atoms) weighs 16 grams. Amadeo Avogadro discovered the mole in the late 1800's.

Dust explosions are a major problem in this country. Over the past decade dust explosions have become more and more relevant as the number of explosions has bee steadily increasing since 1982. In January, nine workers were killed and sixteen injured in a dust explosion on a sugar plant in Port Wentworth, Georgia. The CSB and the OSHA are two committees in deep debate over issues just like this incident. Dust becomes flammable in many cases as soon as it is stirred up and exposed to air. So, many plants such as the sugar plant from Georgia are in great danger of an explosion.

Sulphur Hexafluoride is a gas that is six times denser than air. This means that it weighs more than air in similar proportions. When put into a balloon, SF6 will actually hold it's size, and then pop. This is due to the fact that it is larger than air molecules and will leak out a a slower rate than air will leak in. The opposite is true of helium balloons, and air filled ballons will not lose any air, thy will stay the same. When inhaled, SF6 makes ones voice lower. This is because it is heavier and slows the movement of ones vocal chords.

Motion detectors are very complex machines. There are three types of motion detectors. The first type sends out a beam of light. When the light is interrupted the motion detector goes off. The second type send out sound waves. These waves are in the radio to microwave range. Again, when the waves are interrupted the detector is set off. The third type of motion detector detects heat. When it detects a quick change in heat, the detector is set off. All of these detectors use electrons in many different ways, thus connecting motion detectors in with what we are currently learning about.

Ian, Sound waves are not microwaves! Sound is a different type of wave that requires a medium like air to travel through! MW