Nick+M

[][] I chose this talk because I thought it would be interesting to learn how to improve my chances at living longer. The talk was about the things that will help you improve your chances of living to be 100 years old. These things included lots of vegetables, more than 5 close friends, natural exercise (not with lifting equipment) on regular basis, and having the correct genes. I thought this speech was interesting to listen to and informative. It shows me how to better live my life and how to extend my disease free years.

[] Gas law 1- Charle's Law- V1T2=V2T1. In the video they put one ballon into cold water and one balloon into hot water. According to Charle's Law the balloon in the cold water should decrease in volume and the balloon in hot water should increase in volume. When he took the balloons out of the water it was clear the one in the hot water had more volume than the one in the cold water. Gas law 2- Boyle's Law- P1V1=P2V2. In the video they described this law through explaining the affects on a diver. As the diver goes lower the pressure from the water increases the volume of the diver decreased, and as the diver resurfaced the pressure decreased and the diver's volume returns to normal. Gas law 3-Gay-Lussac's Law- P1T2=P2T1. In the video the heat a can with some water in it until the water evaporates to show that it is at 100 degrees Celcius. They then put the can in cold water and it shrivels up. When the can is heated the pressure increased, and when it cooled in the water the pressure decreased to less than 1atm causing it to crumple.

2/21/10 Property #1- Surface tension- Water has the ability to stick to itself. For example when a drop of water is about to fall off of the tip of an icicle on a warm day it streches out a long ways before falling off. Then when it does fall it snaps back into the shape of a sphere and tries to keep that shape. Water has an unusually high surface tension. [] Property #2- Heat capacity- Water has an unusually high heat capacity. This means it can absorb large amounts of heat without the water actually becoming hot. That is why water can take so long to boil. [] Property #3- Solvent ability- Water is a great solvent. This means it has the ability to dissolve many substances. Water's ability to be such a great solvent is rather unusual. [] Property #4-States of matter- Water can be found in the 3 states of matter found on Earth, solid, liquid, and gas. It is uncommon to find any molecule in these states naturally. [] Property #5-Melting and boiling point. Water boils at 100 degrees C and freezes at 0 degrees C. This is rather unusual for a molecule. []

3/07/10 There are a few ways oil spills can be cleaned out of an ocean. One is they can place a boom around the source of the oil spill which collects the oil from the surface of the water. Another way is using a boat called a "skimmer". These boats collect the oil as the go across the water. Sorbent sponges can be used to absorb the oil. Also, a plane can fly over head and drop chemicals in the water that break down the oil. Lastly, if the spill is recent enough the oil can be burned, but this often isn't used on large oil spills because it pollutes the air. []

4/4/10 Equilibrium An example of equilibrium in everyday life is a teeter totter. When one side goes up the other goes down, but when they reach the extremities of this motion they go the other way. So the side that went down then goes back up. This way neither side goes farther or moves faster than the other. This is like chemical equilibrium because in chemical equilibrium the forward and reverse reactions still occur but they happen at the same rate. On a teeter totter both sides move the same distance and at the same rate.

4/18/10 1-Once a reaction has reached quilibrium the concentrations remain constant because the rate that the reverse reaction is happening at is the same rate as the forward reaction. This means that when one reaction reduces the concentration the other reaction increases the concentration by the same amount at the same time so the concentration never changes. This is still dynamic even though the concentration doesn't change because both the forward and reverse action are still occuring. 2-To write an equilibrium expression the concentraition of the products are divided by the concentration of the reactants. If there is a number before the molecule raise the concentration of that molecule to that power. So if there is 3Co turn it into [Co]^3. Here are 3 examples of equilibrium expressions for these reactions 1 Ca4 (s) <--> 2Ca2 (aq) k= [Ca2]^2/ [Ca4] 2 2H2O(l) <--> 2H2(g)+ O2(g) k= [H2]^2 * [O2] / [H2O]^2 3 CO2(g) <--> C(aq)+ O2(aq) k=[C]* [O2]/ [CO2] 3-Homogeneous Equilibria H2CO3(g)<--> H2(g) + CO3(g) k= [H2] * [CO3]/ [H2CO3] Heterogeneous Equilibria 2H2O(l) <--> 2H2(g)+ O2(g) k=[H2]^2 * [O2]/ [H2O]^2

5/2/10 A concentrated solution is a solution with a large amount of molecules in a small amount of space. While a dilute solution is a solution where the ratio of molecules to volume is much less. A strong acid is an acid that reacts completely with the base. (forward reaction dominates) While a weak acid is an acid that reacts very little with a base. (reverse reaction dominates)

5/23/10 carbohydrates 1-Carbohydrates are made up of carbon, hydrogen, and oxygen. 2-They provide energy for the body to operate. 3-Sucrose and glucose are examples of them. Proteins 1-Proteins are made up of carbon, hydrogen, oxygen, and nitrogen which can vary in quantity of each depending on the type of protein. They also include at least 1 of 20 differnt types of amino acids. 2-They provide us with energy and allow muscle to be built. 3-Examples of protein are keratin and albumin. Lipids 1-Lipids are mad up of fatty acids and molecules called glycerol. 2-Their main job is to store the energy that the body obtains and will later use. 3-Examples are phospholipids and cholesterol. Nucleic Acids 1-They are composed of a chain of monomeric nucleotides. 2-They hold genetic information. 3-Examples of these are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).