Electronegativity

Interactive Question 7.2 Cite some experimental evidence that indicates that membrane proteins drift. A good form of experimental evidence is Fluorescence Recovery After Photobleaching, aka FRAP. In the FRAP process, membrane proteins are labelled with a green fluorescent protein, and part of the plasma membrane is “bleached” with a laser, causing them to lose their fluorescence. The part that was bleached will eventually become fluorescent again, as molecules drift in by diffusion. How might…

Question 1  In what kind of food do we find sucrose, maltose and fructose?  Sucrose, maltose, and fructose are all disaccharides found in carbohydrates. Sucrose is a table sugar, so we are to find this in sugary foods: cakes, sweets, etc. Lactose is in milk, cheese, ice cream, etc. Maltose is malt sugar found in sweet potatoes, McDonalds’ Hotcakes/Low-fat caramel sauce, canned mango nectar.... Since these are all disaccharides, they must all be broken down to monosaccharides before they are…

Chemistry Honors Mrs. Moreno Period 5 INTERPRETING THE PERIODIC TABLE Partner’s name: Faranak Hajikhan, Pablo Moncada, Albina Contreras and Karla Santos Title: Interpreting the Periodic Table Date: 12-18-14 Subject: Honors Chemistry / Period 5 Introduction: The periodic table is a table of the chemical elements in which the elements are arranged by order of a atomic number. The periodic table also has a special name for its vertical columns. Each…

that homeschooled students lack social skills which does not allow them to function in the real world, which is highly untrue. Students who are homeschooled will not learn the when to use cos and tan on their calculator, or how to calculate the electronegativity of an atom but will learn about topics that will benefit their future. Homeschooled students have the opportunity to learn how to do household activities they will need to know how to do when they depart for college such as cooking,…

At the beginning of the 1900s chlorine started to be used as a disinfectant in water. Water had to be chlorinated because of waterborne pathogens which would then go and cause deadly diseases which flourished in our pipes and water ways and infected millions of people. But ever since the disinfection of water the most of these diseases have been eliminated in first world countries but is still a big problem in 3rd world problems. (Calomiris, 1998) Chlorine is the most used disinfectant around…

a special type of bond called the hydrogen bond which occurs when the element, hydrogen shares its electrons with another highly electronegative atom and a nearby molecule. Since the hydrogen atom contains a positive charge and produces high electronegativity with other atoms, it is capable of strongly attracting two things; a highly electronegative atom and the negative pole of another molecule. In this case, the water is being absorbed by C3H3NaO2 due to hydrogen bonding, where the positive…

Antimicrobial peptides (AMPs) are a class of host defence peptides found in all living organisms. They exhibit significant activity against bacteria, virus, fungi and several other pathogens. AMPs share certain common features. (a) They are small molecules with varying amino acid composition and length. (b) They are cationic, due to the presence of positively charged basic amino acids and (c) amphipathic, since they contain alternate hydrophobic nonpolar and hydrophilic, polar residues. AMPs are…

Oxidation is a very interesting topic in today 's society. Infact it is a hot topic in many debates about budgets and even safety. This is because of oxidations most common form, rust. Most people are very familiar with rust as it affect our infrastructures, such as bridges, beams, ladders, pipes, and railings. Another big big effect that rust creates is in vehicles as almost everybody uses them in their day to day life. For some the rusting these objects can be dangerous if the right…

Introduction For the most part, the periodic table groups atoms together which are similar in structure and property. Groups or columns share similar electronic configurations, on which a variety of properties are based1. In the lab, the tested elements include those from Group 1, Group 2, Period 3, Period 4, Period 5, Period 6, and a series of metals (Calcium, Copper, Iron, Magnesium, Tin, Zinc). Group 1 elements have one valence electron and are extremely reactive. Most of the time, compounds…

 Comment: The three bonds (one solid line, one wedged line and one dashed line) that are attached to the + carbon atom are turned inside out. If the starting material has Br on the right side of the + carbon atom, the final product will have OH on the left side of the + carbon atom and vice versa.  Comment: There is only one hump for the energy profile of an SN2 reaction. As we shall see later, there are two humps for the energy profile of an SN1 reaction. One easy way to…