Alex+W

Wiki assignment 8: Equilibrum 2
1. The concentration remains the same because the forward reaction equals the reverse reaction. Even though the molecules are constantly reacting the system still remains constant, therefore the concentration remains the same. This means that the forward reaction equals the reverse reaction because there is no net change. 2. aA + bB <---> cC + dD, the lowercase letters are the coefficients and uppercase letter represent ions. The equilibrium constant (K)=[C] c [D] d / [A] a [B]b. The inside of the brackets stands for the concentration.

H(g)+H2(g)←→3H(g) K= [H]3/[H][H2] I2(aq) + I-(aq) ←→ I3-(aq) K=[I3]/[I2][I] I2(g) + Cl2(g) ←→ 2ICl(g) K=[ICl]2/[I2][Cl2]

Homogenous H(g)+H2(g)←→3H(g) K= [H]3/[H][H2] heterogenous NH4Cl(s) ←→ NH4+(aq) + Cl-(aq) K=[NH4+][Cl-]

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==When adding concentration, the reaction rate increases. If the concentration of reactants is increased, the equilibrium will be shifted towards the products, and if the concentration of the products is increased, then the equilibrium is shift towards the reactants. If you were to combine HCL and alka seltzer and the HCL was not diluted, there would be more atoms per area and more reactions would occur.==

If you increase the surface area, the reaction rate will be faster because the two types of molecul can only bump into each other at the liquid solid interface. By Chewing your food you increase the surface area so that digestion can go faster.

[] Catylists increase the speed of chemical reactions. The catylist lowers the activation energy which gives an alternate route for the reaction. This is liike climbing a mountain with a group. Some people might take a separate, easier trail so they can get up the mountain with less energy. This is what the catalyst does. [] Temperature will increase the reaction rate because in order for molecules to collide you need energy and increasing the temperature will increase the energy. When heating up a basketball the molecules inside of the basketball gain more energy, increasing the collisions, thus inflating the ball.

Wiki assignment 4: Wonderful Water
1. Most liquids contract when they get colder. this is not unusually high or low, but it is unusual because water contracts until it reaches 4 C, then it expands until it is solid. 2. Another physical property is that the solid form of water is less dense than the liquid form, which is why ice floats. This is unusual because most of the solid forms are more dense than the liquid. 3. The boiling point of water is 100 C. This unusually high compared to other molecules. 4. Water has an unusually high surface tension, which makes water adhesive, elastic, and tends to separate in drops. 5. Water in pure state is unusually neutral in pH, which means it is neither acidic nor basic.

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WIKI assignment 3: A Global Warming?
The greenhouse effect starts with the balance needed between the radiation of the sun and the earth. The gasses such as water vapor traps radiation from the sun. The greenhouse gasses' molecules switch charges at a certain frequency, and when it matches the energy in the region the charge will absorb the energy. The earths surface also releases infared radiation for the greenhouse gasses, and the greenhouse molecules absorbs this energy and emits this energy again. This energy can be emmited in any direction. Without the greenhouse effect, the temperature of the earth would be about 60 degrees F cooler.

I heard that the icebergs will all eventually melt and cause the water pressure to rise and eventually flood the earth. I also heard that global warming could be a hoax and all of the statistics and research done by the scientists was biased and tweaked to make it seem like global warming was actually happening.

WIKI assignment 2: Gas Laws in Real Life
[] My first video is an aerosol can exploding as it gets heated up. As it gets heated up the air inside the can gains more energy and bounces off of the walls more, therefore creating more pressure. When the pressure on the inside gets greater than the pressure on the outside, the can explodes.

My second example of a gas law in real life is when you heat/cool a basketball. I have a lot of basketballs i leave in my garage. When i go outside to play with them in the summer, they are inflated and bounce perfectly because the warm weather increases the pressure of the basketball. When I am waiting for rides in the winter, I dribble a basketball, but have a hard time finding a ball that isn't deflated, because the cold weather decreases the air pressure inside the ball.

My third example is your example of when you were in Chicago climbing a mountain and your pop cans all exploded. The higher you get the less dense the air gets. Because of this, the pressure on the inside on the can is greater than the outside of the can, therefore the cans exploded.

WIKI-WIKI TED assignment 1: TED talk
http://www.ted.com/talks/rebecca_saxe_how_brains_make_moral_judgments.html

I chose this TED talk because of the title. Life would be so much easier if I could read peoples minds because I would know what people are thinking and what they want. I have always been interested in this topic and wondered if it will ever be possible to read minds. Unfortunately for me this video was not so much about reading eachothers minds, but more about why the brain makes the moral judgements that they do and how to interpret them.

This video was about why brains make moral judgments and how the judgments change from early ages, to adolescence, and to adults. In the beggining, it showed two videos. One of a three year old boy, and one of a five year old boy. They are both given a story/puppetshow about a pirate who set his cheese sandwhich on a treasure chest. Once the pirate leaves, the wind blows his sandwhich from the chest to the ground. Meanwhile another pirate comes and also puts his cheese sandwhich on the chest. The question given to both the three and five year old boy was "When the first pirate gets back, which sandwhich will he take." The three year old says that the first pirate will take the sandwhich that is on the ground because "It is his sandwhich," but the five year old says that the first pirate will take the sandwhich on the chest, which is the right answer. The moral judgments are different because humans gain the ability to interpret moral judgments as their age increases.

Rebecca Saxe also explains that the RTPJ is the part of your brain that tries to interpret what others are thinking. The "TMS" is a magnetic force used to change peoples decisions and alter what they think and make their moral judgments different.

I think that this video doesnt help us actually read minds but it more helps us interpret how our minds develop as we get older. I think the TMS is a great discovery that will eventually help us to be able to control someones body completely. I am not sure if that is a good or bad thing though.