Jimmy+L

[|video] I chose this talk because in the world today energy is a problem. Which way is the best way? Some say coal, but it's terrible for the air. Others say windmills, but people complain they make too much noise and hurt the view of the lovely cornfields. The talk was about an African boy who went to the library where he checked out a book of how to make a windmill. He followed the pictures and used whatever material he could find which would be an acceptable substitute for what the book suggested. It was then revealed why the boy was at TED, he wanted sponsors to make a windmill to power his whole village. I was stunned by what this young man did with junk laying around. It must have been hard work to find the pieces, let alone stack them fairly high off the ground with no safety harness. Now he's an expert, but instead of capitalizing his ability, he helps the community so they may all have electricity. I felt happy for his accomplishment and a sence of hope of which people won't be just money makers but still have compassion and sympathy

Number 2 My first though is in an air compressor. Because when air particles hit there is idealy no heat, the temperature stays the same. So when compressed the volume decreases and the pressure increases, but at equal ratios so when multiplied together it equals the non-decreased volume and the non-increased pressure. My next idea is a volcano. A lot of CO2 is in one, very hot and because of the heat an increased pressure. When the volcano erupts and the CO2 shoots out, it will cool down so it's pressure decreases and the before and after the eruption should be the same. My final thought is a propane tank. When propane is enjected it is compressed so as much as possible can fit within the tank. This means that inside the pressure is increased and the volume is decreased inside, but when multiplied together the two equal product of the uncompressed and unpressured propane

Global warming seems to be the cause of infa-red light and of course the greenhouse gasses. As infa-red light comes and goes from the earth, it hits a greenhouse gas molicule. These molucles (CO2, CH4, N20, H2O, O3, CCl3F and CCl2F2) wiggle and so their magnetic field dose as well. When wiggling at the same frequency of infa-red light, it is absorbed and eventually released. The problem is that some of those molicules now have greater percentages thanks to fossel fuels humans are using so more infa-red light is being held in the atmosphere and being sent back down to earth. The statement I've heard the most is above the polar ice caps. As ice shelfs and fall into the ocean and iceburgs melt, the water level goes up. This means that eventually places on the coast will be flooded and our living space will go down unless underwater cities are invented soon. One statement of denial I've heard is that it's just nature. Humans haven't sped up the process, it's just another ice age coming on.Nothing can be done to slow it down because it's nature and people can't slow down nature, right?

Water feezes at 32 degrees Fahrenheit, 0 degrees celcius or 273.15 Kalvins. Compared to other molecules of the simular sort, this freezing tempureature is rather high as is its boiling point. Information courtesy of Mr. Dahlman My second point is water in its solid state. When it freezes, water expands instead of contracting. If it did contract, then ice wouldn't float because they would be too heavy. It would sink which would raise water levels until the whole earth is covered with water. I know of no other molecule that does this. Information from Mr. John my seventh grade teacher As far as humans know, water is a staple of life. everyting alive needs water. Unlike Oxygen, planets also need this to live. No other molecule, even ones not that similar to water, has such an important role in life. I don't remember where I learned this. Water also has the Hydrogen bond. Because Hydrogen is so small and positively charged, the negatively charged oxygen in other water molecules can get very close to it. This makes very strong attachement, though the two molicules aren't really touching, their magnetic forces are holding them close together. These bonds can only happen with two other atoms (Nitrogen and Florine) so this is pretty unique to water. Information courtecy of Mr. Dahlman. Water is the natural solvent. It is a seven on the pH scale so it is not an acid or a base and being the natural solvent, it can (with enough added) neutralize most any acid or base. Being Neutral isn't that uncommon for molicules is not that uncommon, but the fact that it can neutralize so many things is unique. Information ffom Mr. John my seventh grade teacher.

One way to get oil out of water is to use a "Boom" and a "Skimmer". Booms are machines placed in water that are like a container with walls going down but no bottom. The oil, which is lighter than water floats to the top and is trapped by the walls while water is able to flow underneath. A Skimmer (which is a boat) comes along with a big vaccum and sucks the oil up. Another way is to put a special bactiria in the water. The bug sees the oil as food and of course doesn't harm sea life or the water. Solubility is the quantity of a particular substance that can dissolve in a particular solvent. Dissolution is the rate of how fast or slow something goes into a solution. Heating up something increases the rate of dissolution because when warmer molicules move faster so they interact more with each other. Stirring also increases the rate of dissolution because when stirred the molicules have more energy therefore bump into each other more. With a larger surface area, the rate of dissolution increases because the solvent and the solute have more space to interact. The Solubility goes up when heated because there's more molecular collisions. The Solubility goes up when stirred because The molicules have more energy so they move faster and collide more. An increased surface area will also bring up the solubility because there's more space for the molicules to mix.

The first thing that came to my mind was an acid eating some metal. When more acid is added more of acid molicules have a chance of hitting the metal molicule at the correct speed and angle. A higher temperature increases the reaction rate. Using acid and metal example, the acid's molicules and the metal molicules are now moving faster so the chance of them colliding with the correct amout of energy and the needed angle. A larger surface area also increases the reaction rate. If you have a sheet of metal and put a big glob of acid on one spot the acid doesn't war as fast as if you had spread it around for when in one glob more acid is just sitting one itself than actually doing the dissolving. When it's spread out then more acid molicules have a chance to hit the metal at the right energy and direction to he effective. Having a catylist also speeds up the reaction rate. This is shown when Hydrogen peroxide breaks into water and oxygen. when Mangese oxide is added, this lowers the activation energy so more particles have enough energy to break free. info from []

The first thing I thought of was physics and Neuton's third law about equal and opposite reactions. This fits the definition of equilibrium pretty well I think. A fan moves air around the room, the fan pushes the air and the air pushes back. This fits the chemical equilibrium because though air and fan are moving, there is no net change. When one speeds up the other must have as well and vice versa. The air mixes and changes like chemical equqalibrium but mathimaticly there is no net change.

1) The concentrations stay the same because of the rate of change for the substances is the same. When one collection of molicules change to form another, another group of molicules of the latter shape change to the first. because of this there is no net change. 2) First you must have a balanced equation. With that you just put the equilibrium sign in between the reactants and products. 2FeCl3(aq)+SnCl2(aq)<=>2FeCl2(aq)+SnCl4 N2(g)+3H2(g)<=>2NH3(g) CO2(g)+NaOH(aq)<=>NaHCO3(aq) 3)Cu(s)+2Ag+1(aq)<=>Cu+2(aq)+2Ag(s) [Cu+2]/[Ag+1]2 CaCo3(s)<=>CaO(s)+Co2(g) [Co2]

1) A concentrated solution has a higher percent composition of solute and a lower percent composition of solvent. A diluted solution is the opposite. 2) A strong acid is when the forward reaction dominates and none of the original acid is left. A weak acid is one that barely dissolves its victim at all and mostly just stays in its original form. 3a) Strong acid conentrated solution H2SO4 + H2O -> H3O+ +HSO4- b)Strong acid dilute solution H2SO2 + H2O -> H3O+ + HSO2- c) weak acid concentrated solution

1) A molecule is a bunch of atoms stuck together. 2) Molecules are what your made of and hold you together. They digest your food and protect you from and give you diseases. They break down into energy for the body. basicly, they keep everything that's living alive until energy runs out. 3) Two examples of Carbohydrates are Glucose and fructose. Two examples of lipids are fats and oils. Two examples of proteins are