Jon+W

EQUILIBRIUM 2 WIKI ASSIGNMENT #8
1. The concentrations of the reactants and products remain the same because the rate of reaction is constant. This does not contradict our picture of a dynamic system because the molecules are constantly reacting but the rates that at which the reactants react is equal to that of the reactants. 2. In an equilibrium expression the only molecules that are used are the gas and aqueous molecules. The liquid and solid molecules are not included. The products are the dividends and the reactants are the divisors. The chemical symbols are then put in brackets and if there are more than one molecule of that type in the equilibrium it is raised to the power of how many molecules of that type there are. 2 NO2(g) N2O4(g) 

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Heterogeneous
====== 2 NO2(g) N2O4(g)
 * Homogeneous**

REACTIONS RATES WIKI ASSIGNMENT #6
The more concentrated a substance is the more molecules there are per amount of area. This leads to more collisions and a faster reaction time. The greater the temperature of a substance is the more the molecules move. This leads to more collisions and a faster reaction time. A catalyst decreases the amount of energy needed for the reaction to occur, this causes a faster reaction time. The greater the surface area is the greater the amount of molecules that come in contact with other molecules. This leads to a faster reaction time.

WONDERFUL WATER WIKI ASSIGNMENT #4
1. Water is the only natural substance found in all three states of matter at the temperatures normally found on Earth. Water is the only one making it very unsual. This fact means that in the range of temperatures recorded on Earth, water is the only substance found in nature in a gaseous, solid, and liquid form. [] 2. The solid form of water, ice, floats on water. This is very unusual compared to other compounds. Since ice can float on water that means it is less dense than the liquid form of water. [] 3. Water freezes at 32 degrees F and boils at 212 degrees F. Compared to other molecules water's freezing and boiling points are very low. This means that at 32 degrees F water changes from a liguid to a solid. At 212 degrees F liquid water begins to evaporate and become a gas. [] 4. Water has a high specific heat index. Water's specific heat index is higher than most compounds. This means that water can absorb a lot of heat before its temperature rises. [] 5. Water has a high surface tension. Water's surface tension is higher than most compounds. Surface tension is the cohesion of molecules that causes water to clump to together instead of spreading out in a thin film. [] []

THE GREENHOUSE EFFECT WIKI ASSIGNMENT #3
The Greenhouse Effect is the trapping of radiation by certain gases which causes an increase of the Earth's surface temperature. The sun releases many different frequencies of light and 30% of them are blocked by the Earth's atmosphere. The other 70% passes through the atmosphere and is either reflected or absorbed by the Earth's surface. The reflected radiation either passes back through the atmosphere or is absorbed by greenhouse gases and then emitted back at the Earth. Humans have caused an increase in these greenhouse gases which some people say have caused global warming.

Statements/Opinions: -"Arctic ice is rapidly disappearing, and the region may have its first completely ice free summer by 2040 or earlier" - "[|Montana's Glacier National Park] now has only 27 glaciers, versus 150 in 1910." -"An upsurge in the amount of extreme weather events, such as [|wildfires], [|heat waves], and [|strong tropical storms], is also attributed in part to climate change by some experts."

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GAS LAWS WIKI ASSIGNMENT #2
[|Example 1] This example demonstrates Boyle's Law. Boyle's law states that if the temperature remains constant the pressure multiplied by the volume will remain constant. In the video, a deflated balloon is placed in a closed container and a vacuum is attached to the container. As gas molecules are sucked out of the container the pressure inside decreases. This causes the volume of the balloon to increase so it does not violate Boyle's law. The inverse is also shown.

[|Example 2] This example demonstrates Charles' Law. Charles' Law states that temperature and volume are directly proportional if the pressure stays constant. In the video two balloons of the same volume are placed in hot and cold water. The volume of the balloon placed in hot water increased because the kinetic energy of the gas molecules increased. The volume of the balloon placed in cold water decreased because the kinetic energy of the gas molecules decreased. The kinetic energy is equal to the temperature in Kelvin of the gas.

[|Example 3] This example demonstrates Gay-Lussac's Law. Gay-Lussac's Law states that pressure and temperature are directly proportional if the volume stays constant. In this segment of the video a small amount of water is heated until it boils in a pop can. When the water reaches the boiling point the can is placed in ice water and is immediately crushed. This is because as the water boils vapor is formed. When the can is placed in the ice water the vapor condenses and the temperature inside the can decreases along with the pressure. Because the pressure inside the can is less the the pressure outside the can collapses.

TED TALK WIKI ASSIGNMENT #1
[|Architecture That Repairs Itself]

I chose this talk because I am interested in the field of architecture and the technology being developed to improve it. The speaker, Rachel Armstrong, talks about a material that grows itself. This material, called protocells, would allow for building to grow and repair themselves. These protocells are little fatty bags with a chemical battery and no DNA. This technology is still being studied so that it can be used to repair cities such as Venice. Venice is slowly sinking into its canals but if the protocell technology can be improved it has the potential to save the city from slowly sinking. I took away from this talk that if this technologies can be improved the potential for metabolic materials is limitless and since these materials can build and repair itself maybe natural disasters, like the earthquake in Haiti, will not be as catastrophic.