Compound

release fewer lights per unit area than inorganic solid-state based LED point-light sources. Introduction-An OLED (organic light-emitting diode) is a sort of LED (light-emitting diode), where the emissive electroluminescent level is a film of organic compound which releases light in response to an electric current. This layer of organic semiconductor material…

Innocent until Persuaded Otherwise My knuckles become whiter and whiter with each piece of vitriol that spills thoughtlessly out of his mouth. Grinding my teeth, I look over his shoulder and stare blankly at the beige wall behind him, while trying to keep the left side of my face from twitching. Pure disgust, embarrassment, nausea—all feelings his ignorant words bring to the surface of my consciousness. I can’t blame him, yet I cannot stand him. I leave, the sight of the padded walls behind his…

found at different levels in some food products and in animal fat and fatty human tissue. Dioxin refers to a group of chemicals where molecules have two oxygen atoms that replace two carbon atoms, caused by the burning of chlorine-based chemical compounds with hydrocarbons. It contains…

The purpose of the lab was to determine which unknown substances were ionic compounds, if any, using 4 different methods. This lab was to determine which of the three unknown substances (X, Y & Z) are ionic compounds and which are not ionic compounds. In conclusion unknown Y is an ionic compound and unknown X and Z are not ionic compounds. In order for a substance to be an ionic compound it must have a high melting point, it must be brittle, it must be soluble in water, it can not conduct…

project was to identify an unknown ionic compound; each group was assigned a small container filled with 5 grams of an unknown ionic compound. In order to be able to identify the unknown compound, we had to do several preliminary tests, cation tests, anion tests, and a reactivity test. Throughout these three weeks, we will identify a compound and its qualities just by looking at it. We also made quantitative and qualitative solutions and tested the compounds' pH, conductivity, and melting point.…

with the dangerous substance of gunpowder that could be used. Guns are cool however the physics behind them is nowhere near to the elaborate physics involved in archery. Today we have three common bow types; the longbow, the recurve bow, and the compound bow. Within these three different types of bows physics applies the same to all of these. In archery you take a bow and you knock an arrow to the string (connect the back of the arrow to the string), Then you use your…

product in the lab. They have the ability to do this due to the molecules of the dyes possessing conjugation. Conjugation is defined as p-orbitals overlapping which causes the electrons within to be delocalized; it is also seen in molecules and compounds that contain alternating double bonds. Systems that possess conjugation absorb energy in the ultraviolet-visible region of the spectrum to cause excitement of electrons and the transitions. When the electrons get excited, they jump from lower…

Though this class did discuss topics that I thought would be discussed in a class on Indians like Indian mascots and how anthropologists have treated Indians, the most surprising information I learned in this class was that there were mounds built by the Indians in Indiana. Prior to knowing about Angel Mounds, I thought I would have to travel to the Southwest to see any type of structure left by early Native Americans. It was interesting to learn what that the mound were built for many purposes…

substances above Hydrochloric acid (HCl) is the stronger acid, and Sulfuric acid (H2SO4) and Lead (II) nitrate (Pb(NO3)2 are the weaker acids. If the substance is not an acid nor a base, the substance is neutral. In each set there were three neutral compounds, one acid, and one…

Synthesis of Copper Compound lab was to take a regular copper wire and turn it into a metallic copper which is a pure substance. When copper reacts with nitric acid several physically properties can be seen happening for example: the colour changing and gas vapor starting to form. Many of the other reactions were similar to this that I and my partner saw such as: the formation of copper (II) hydroxide, decomposing the compound (CuO (OH) 2) by heating it, adding a different acid compound (H2SO4),…