Alex+J

=Wiki Assignment 10- Biomolecules=

1.Carbohydrates: are made of simple sugars or monosaccharides which contain -OH substituents. They serve as food sources and are structural materials for plants. Glycogen and Fructose 2. Proteins: Made up of hydrogen, oxygen, nitrogen, carbon and amino acids. They act as catylsts, structural materials, binding materials, and carriers that send proteins throughout your body. Monosaccharides and simple sugars = 3. Lipids: are groups of organic compounds that include sterols, fats, oils and waxes. Help with brain function and energy production. Glycerols and Cholesterol. 4. Nucleic Acids: they are the building blocks of living organisms. Help with the reproduction of cells and in protein synthesis. RNA and DNA Wiki Assignment 9- Concentrated vs. Dilute and Strong vs. Weak= 1. A dilute solution is a mixture that only has a little solute dissolved in it and a concentrated solution has a lot of solute dissolved into it. 2. A strong acid solution contains strong acids such as HCL. A strong acid is an acid that completely reacts with water. A strong acid solution means that the forward reaction dominates. A weak acid solution is when a the reverse reaction dominates because there is a strong conjugate base present such as KOH. 3.

=Wiki Assignment 8- Equilibrium 2= 1. Once a chemical system has reached its equilibrium the concentrations of all the reactants and products remain constant with time even when the reactants and products are not the same because when one element becomes more soluble the equilibrium shifts either left or right to get back to equilibrium. This means that the cycle is dynamic because there are a lot of compounds but they can still reach an equilibrium. 2. In an equilibrium expression the products are always put in the numerator and the reactants in the denominator. But when writing an equilibrium expression you exclude all of the solids and liquids, only use aqueous and gaseous elements. Around each element there is are brackets and you put the coefficient in the as an exponent. Some examples are..... 1. 2CO (g) + O2 (g) = 2CO2 (g) Expression [CO2]/ [O2] [CO]2 2. 2NBr3 (g) = N2 (g) + 3Br2 (g) Expression [Br2]3 [N2]/ [NBr]3 3. C2H2 (g) + 2Br2 (g) = C2H2Br4 (g) Expression [C2H2Br4]/ [C2H2] [Br2]2

3. Heterogeneous H2S (g) + Cl2 (g) = S (s) + 2HCl (g) Expression [HCl]2/ [Cl2] [H2S] Homogeneous H2 (g) + I2 (g) = 2HI (g) Expression [HI]2/ [H2] [I2]

=Wiki Assignment 6- Reaction Rates= Concentration affects the reaction rate something such as when milk is being poured into a mixture to create an omelet. The more concentration or milk the faster the reaction is because it builds enough energy to break bonds more quickly than with less milk. This means that to make the omelet the molecules have the correct orientation when they collide.

Temperature is another fact that affects the reaction rate of a reaction. When fruit is stored in a hot place it molds more quickly than it would when it would if the fruit was stored in the refrigerator. This occurs because as the temperature increases the more quickly the activation energy can be reached and therefore the fruits molding process is quicker.

Catalyst is a substance that increases the rate of the reaction without being consumed by the reaction. A catalyst affects the rate by lowering the activation energy which makes the energy needed to break bonds lower. An example of this is by boiling water. To boil water faster salt is added which is the catalyst. This decreases the activation energy which increases the rate of the boiling.

Surface Area affects reaction rates as well. If we were trying to make kool-aid if we had a very tall but skinny glass and we had a very wide but short glass the short glass' reaction rate would be higher because it has a larger surface area. Because it has a larger surface area the sugar of the kool-aid disperses through it more quickly because in the tall skinny glass it has to travel all the way down to the bottom which takes longer. 1. One way that scientists use to help when an oil spill occurs is to place 'Booms' in the oil infected water. Booms are machines that collect oil off of water. In the case of an oil spill the booms collect most of the oil that surrounds it. Another way that scientists collect the spill is by using skimmers which are boats that collect the oil from the top of the water by going over the oil.
 * Wiki Assignment 5- Investigating Solubility and Immiscibility**

2. Solubility is the amount of the substance that can be dissolved in a given amount of solvent. Rate of Dissolution is the rate at which something dissolves. In solubility as the temperature of the substance increases in a solution the amount of the substance that can be dissolved increases because the particles get more excited and are easier to reach. Stirring does not affect solubility because it doesn't change the amount of substance that can be dissolved but it only changes the rate or the rate of dissolution of the solution. As the surface area increases the solubility of the substance remains the same whereas the rate of dissolution will increase because the more space particles have the easier the solvent can reach them because they spread out, this increases the rate of dissolution.

= = = = =Wiki Assignment 2- Water= 1. Water is unusual in it's solid form which is ice. It has a low density in comparison to most metals. It's density is 1 gram per milliLiter. Density is the mass of the object or in this case the mass of the water divided by the volume of the water. http://www.engineeringtoolbox.com/water-density-specific-weight-d_595.html

2. Water has a very high critical temperature compared to Nitrogen. Water's critical temperature is 647K while Nitrogen's critical temperature is 126 K. Critical temperature is the temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied. http://www.periodictable.com/Elements/007/data.html http://www.ozh2o.com/h2phys.html http://www.chem.purdue.edu/gchelp/liquids/critical.html

3. Compared to CO2 water has a similar molar mass. The molar mass of water is 18.015 grams per mole. The molar mass of CO2 is 44.0096 grams per mole. The molar mass is the sum of the atomic masses of in a given element, mixture or solution. http://www.webqc.org/molecular-weight-of-CO2.html http://www.ozh2o.com/h2phys.html http://dictionary.reference.com/browse/molar+mass

4. The boiling point of water is very low compared to some metals such as nickel. The boiling point of water is 100 degrees Celsius. The boiling point of nickel is 2732 degrees Celsius. The boiling point of something is when the liquid of something is transformed into vapor when heat is supplied. http://www.chemicalelements.com/show/boilingpoint.html http://www.ozh2o.com/h2phys.html http://www.blurtit.com/q237019.html

5. The molar volume of water is high compared to that of Oxygen. The molar volume of water is 55.5 moles per liter. The molar volume of oxygen is 22.393 moles per liter. The molar volume of an element or mixture is the volume of one mole of a substance at a given temperature and pressure. http://wiki.answers.com/Q/What_is_molar_volume_of_oxygen_at_Standard_Temperature_and_Pressure http://www.ozh2o.com/h2phys.html http://en.wikipedia.org/wiki/Molar_volume =Wiki Assignment 2- Gas Laws= One example of a gas law is Boyle's gas law. this law states that as the volume decreases the pressure increases. In this video it shows a model of a syringe. When the volume or the space where the air is contained decreases the air particles collide with the walls of the container and with each other causing a higher pressure.[|Boyle's Law]

Another example of a gas law is Charles law. Charle's law states that when the temperature is increased so is the volume to keep the constant. In the preceding photo there is a picture of a teapot being heated by a stove. As the temperature of the coffee pot increases so does the volume of the coffee pot. [|Charle's law] My last example of a gas law is Gay-Lussac's law. For this example I will also use the Charle's law photo. Gay Lussac's law states that when the temperature increases the pressure increases as well. This example works because as the temperature inside the teapot goes up the air molecules begin to move faster and bump into the walls and other air particles faster and more frequently. When the temperature reaches a certain point so does the pressure. When the pressure gets to this certain point the cap will fly off and it will begin to whistle. [|Charle's law] = =

=Wiki Assignment 1- TEDtalk= I chose this talk because i heard about it on the news a few months ago. Also this invention is an available cure to the water crisis that is all over 3rd world countries. This talk is a man speaking of a water bottle that he invented which is a water bottle and a filter that is better than any filter on the planet. By scooping any water from any source a person with just a few pumps of the bottle will have clean drinking water. This revolutionary water bottle will save thousands of lives. Through this video i learned that if we look at problems in different ways there are better and sometimes cheaper ways to solve them much like this water problem. Also this video has taught me a lot about this water problem. [|Life saver bottle]