Chemical polarity Essays & Research Papers

Best Chemical polarity Essays

  • Chemical Bonds - 1310 Words
    CHEMICAL BONDS Chemical Bonds I. Introduction Chemical compounds are formed by the joining of two or more atoms. A stable compound occurs when the total energy of the combination has lower energy than the separated atoms. The bound state implies a net attractive force between the atoms called a chemical bond. The two extreme cases of chemical bonds are the covalent bonds and ionic bonds. Covalent bonds are bonds in which one or more pairs of electrons are shared by two atoms. Covalent...
    1,310 Words | 5 Pages
  • Molecular Polarity PhET Lab
    Molecule Polarity PhET Lab A study of electronegativity, bond polarity, and molecular polarity Introduction: In this atomic-level simulation, you will investigate how atoms' electronegativity value affects the bonds they produce. When two atoms bond, a pair of electrons is shared between atoms. Electronegativity is a measure of a single atom's ability to hoard electrons shared in that bond. In this lab you will work diligently, at your own pace, to answer a number of questions. To begin,...
    665 Words | 3 Pages
  • Demonstration of Polarity - Chemistry - 539 Words
    Baron Hasslinger Chemistry Like Dissolves Like — a Demonstration of Polarity Aim: To illustrate that polar solutes dissolve in polar solvents and that non-polar solutes dissolve in non-polar solvents by mixing polar and non-polar solutions in test tubes. Material: • Lab coats and safety spectacles • A fume cupboard • Heptane • Water • Potassium Permanganate • Iodine • 2 test tubes • 4 small flasks Method: (Wear safety specs and lab coats) • Prepare 4 small flasks containing: • A Heptane • B...
    539 Words | 2 Pages
  • Emulsification of Oil - 606 Words
    Emulsification of Oil Prepared for: Mrs. Elena Gallagher By: Anna Villanella March 25, 2014 Oil is a nonpolar molecule. Polar molecules have charged groups or atoms. Nonpolar molecules have no charged groups or atoms. Polar molecules, like water, are good solvents for other polar molecules. This means they molecules that react with the water disperse into the water. Nonpolar molecules don’t disperse in water because nonpolar molecules and polar molecules don’t interact. How exactly can we...
    606 Words | 3 Pages
  • All Chemical polarity Essays

  • Dillard lab2 - 517 Words
    Lab 2: Polar Bonding Student Name: Emerald Dillard Course ID/Section: BIOL 1408-55426 Date: June 13, 2015 Answer the questions and report your data in this fillable PDF using the observations and results you recorded in your lab manual while performing the experiments. Save the completed PDF file with your last name and lab number and submit the report as directed by your instructor. (For example: jones_lab2.pdf) Consider the Concepts 1. Explain, in one to two complete sentences, why a...
    517 Words | 4 Pages
  • Exp. 2a-B Solubility
    Exp. 2A-D Solubility (pp.13-20) In this experiment, I will be determining/investigating the solubility of different solvents, or more precisely, the extent to which a substance is soluble or insoluble (Part A and B). Another goal of this experiment will be determining miscible (liquids that will mix homogeneously) and immiscible (liquids that do not mix homogeneously) parts in liquids (Part C). Part D of the experiment will be looking at solubility as well, the solubility of organic acids...
    476 Words | 2 Pages
  • Solubility - 2656 Words
    Solubility and Functional Groups _______________________________________________________ You will recall from general chemistry that a solution has two components: the solvent, which is the substance present in greater amount, and the solute, which is dissolved in the solvent. Solubility is defined as the mass (in grams) of solute dissolved in 100 g of solute at saturation. Molar solubility is defined as the amount (in moles) of solute per liter of saturated solution. The solubility of one...
    2,656 Words | 8 Pages
  • Lab Report Synthesis of Esters Introduction
    Introduction: In this experiment, when vinyl strip and acetate strip is rubbed by tissue, it will charge the vinyl strip negatively and acetate strip positively caused by the transfer of electron between the strip and tissue. If molecules have non zero bond dipole, because polar molecule must have a non-zero molecular dipole where electron spend more of their time closer to one atomic nucleus than the other and make one end partially positive or negative than the other end. Different charge...
    650 Words | 3 Pages
  • Chromatography - 561 Words
    Liquid Chromatography Purpose: The purpose of this lab was to separate substances based on their polarity by using liquid chromatography. Data Table: Red Dye Blue Dye Run#1 Run#2 Run#3 Run#1 Run#2 Run#3 Start of Band(mL) 1.50 2.20 1.00 2.70 3.00 2.00 End of Band(mL) 2.70 3.00 2.00 6.40 5.50 6.00 Beaker Eluant Observations 1 H2O White powder 2 5%isopropyl Red powder 3 28%isopropyl Blue powder 4 70%isopropyl Oily residual Calculations: W = Vend –...
    561 Words | 4 Pages
  • General Conclusion - 749 Words
    General Conclusion: These experiments helped us understand the importance of molecular polarity. This knowledge can now be used for the future to predict, for example, if two substances will mix or not. We can now do this by knowing that polar substances only mix with other polar substances, while non-polar substances only mix with other non-polar substances. This concept can be used to predict if a substance will be soluble in a specific solvent. The concepts of solubility and conductivity of...
    749 Words | 2 Pages
  • Organic Lab report - 1166 Words
    1500011658609100915035September 16, 2014 7340036300September 16, 2014 150001165860837008418830 ch 205 734008000 ch 205 150001165860455004576445Properties and reactions OF HYDROCARBONSlab report #1 7340036300Properties and reactions OF HYDROCARBONSlab report #1 4500349250center290090900 Abstract: The purpose of this lab is to understand the properties and reactions of hydrocarbons. This experiment has two procedures. The first procedure is to test the...
    1,166 Words | 4 Pages
  • Intermolecular Forces - 1006 Words
    Intermolecular forces exist between independent particles, such as atoms, ions, or molecules. They can be forces of either attraction or repulsion. The amount of charge, how it is distributed, and the length of time that a charge distribution exists can affect the strength of intermolecular forces. And despite having variable force strengths, all intermolecular forces are considered weak compared to chemical bonds, or intramolecular forces. Chemical bonds are not only stronger; they are also...
    1,006 Words | 3 Pages
  • organic compounds - 686 Words
     Everyday Organic Compounds Laboratory Report INTRODUCTION: To investigate household products made from organic compounds. The IV in this experiment was the household products because I am constantly changing them. The DV would be if it is soluble or not because that is what I am measuring. The control variable would be, the liquid because if I were to change water to another liquid then the data would no longer be correct. The techniques that I used was measuring...
    686 Words | 4 Pages
  • ap-chemistry lab, indentify substance
    Lab: Identify the Unknown substance 11/15/2013   Objective: The purpose of this lab is to identify what the four substances. These four substance are all solids, and numbered #3,#6,#7 and #16. These substances can only be either metal, ionic compound, polar covalent compound or non- polar covalent compound. In order to identify all these compounds, there are 6 tests to test their conductivity in solid state, solubility in water, PH of the water solution, solubility in...
    2,382 Words | 8 Pages
  • Chem Lab Chromatography - 558 Words
    Gabriel Alizaidy Liquid Chromatography September 14, 2009 Objective: To separate the components of unsweetened, grape flavored Kool-Aid. Procedure: Using two syringes, inject different concentrations of alcohol to extract red and blue dyes, and artificial flavoring. Data: Conclusion: Different dyes are shown when separated by different concentrations of isopropyl alcohol. Discussion of Theory: Chromatography, resolution and selectivity played major roles in making the experiment...
    558 Words | 3 Pages
  • Measurement of the Alcohols’ Permeability of the Cell Membrane by Calculating
    Measurement of the Alcohols’ Permeability of the Cell Membrane by Calculating Betacyanin Leakage from Spectrophotometric Readings Introduction The polarity of molecules is based on dipole, which is the separation of electric charges in a molecule. Non polar molecules have an equal sharing of electrons or a symmetrical arrangement of polar molecules, for example, an hydrogen atom (H2(g)). There is no net charge. Polar molecules however have an unequal sharing of an electrons or an...
    2,123 Words | 6 Pages
  • Cromatography and Detergents - 1560 Words
    Question 1: You have carried out an investigation into the pigments that make up chlorophyll. Use the chromatogram you obtained when carrying out this investigation. Clearly explain the separation technique of paper chromatography in terms of partition. Calculate the Rf value of one of the constituent pigments and compare it to the book value. A paper chromatography was used to separate the pigments that make up chlorophyll to analyse, identify, and quantify the components, using paper...
    1,560 Words | 5 Pages
  • Advance Phsyiology Review Questions
    Advanced Physiology Study Questions for Chapter 1 1. Describe the organizational hierarchy of humans from cells to organ systems. 2. Describe the locations and specialized functions of the four basic cell and tissue types. 3. Describe the composition and function of the extracellular matrix. 4. Name the body water compartments and identify the structures that partition these compartments. 5. Define homeostasis. 6. Define dynamic constancy. 7. What term is used to describe the...
    440 Words | 2 Pages
  • Thin Layer Chromatography Lab Report
    OBJECTIVE The purpose of this experiment is to analyze mixtures of compounds prior to, during and after a separation scheme. This experiment also allows monitoring reactions of organic molecules, and determines the identity of a mixture of compounds. STRUCTURES AND PHYSICAL PROPERTIES OF REACTANTS [1] SOLVENTS | a. Hexane1Molecular Molarity: 86.18 g/molBoiling Point: 69 ºCMelting Point: -95ºCDensity: 0.659 g/mL at 25ºCWater Solubility: Insoluble in waterColor/Texture:...
    1,791 Words | 5 Pages
  • Bonding in Elements and Compounds - 1953 Words
    dsfgsfdhdhfg 9. What does a strong odour indicate about the ease with which the particles in a solid leave its surface? A strong odour in one of any of these soilds would simply mean that the molecules leave the surface easily. 10. From your answer to question 1, which of the two types of solids seem to have the stronger forces of attraction? Explain your answer. Camphor has a very strong odor which makes it easy for the particles in the soild leave it’s surface. The particle...
    1,953 Words | 5 Pages
  • Structure and Properties of Organic Molecules
    Structure and Properties of Organic Molecules Reading: Wade chapter 2, sections 2-7- 2-14 Study Problems: 2-35, 2-37, 2-39, 2-40, 2-41, 2-42, Key Concepts and Skills: • Identify constitutional isomers and stereoisomers; identify polar and non-polar molecules and determine what type of substance can participate in hydrogen bonding • Identify the general classes of hydrocarbons, oxygen containing compounds, and nitrogen containing compounds. • Predict general trends in solubility and boiling...
    1,371 Words | 5 Pages
  • Solubility - 1002 Words
    p. 1 Megan Ly Chemistry 231L February 20, 2013 SOLUBILITY Purpose: To better comprehend solubility behavior by investigating the solubility of various substances in different solvents, looking at miscible and immiscible pairs of liquids, and observing the solubility of organic acids and bases....
    1,002 Words | 32 Pages
  • Biological Assessment of Paris Polyphylla
    Biological Activities of Paris polyphylla found in Himalayan Region of Nepal Prabin Koirala, Khagesh Chataut and Keshab Bhattarai Department of Biotechnology, WhiteHouse Institute of Science and Technology, Purbanchal University, Lalitpur, Nepal. e-mail: prabinkoirala122@gmail.com Abstract The study focused on phytochemical and biological analysis of Paris polyphylla (PP). Crude Chloroform/Methanol (1:1) extraction performed on the rhizomes of Paris polyphylla collected from himalayan...
    2,406 Words | 9 Pages
  • VSEPR Lab - 1830 Words
    Molecular Structure or "The Shape Molecules are In" Directions: Make a copy of this document and change the file name to “your last name, VSEPR Lab.” Place the document in the Google folder with your name on it. Follow each instruction to build molecular models and answer the following questions. Make sure your notes, comments, and answers are in a different text color. When you have finished with the lab questions attach a 1­2 page conclusion that summarizes and ...
    1,830 Words | 5 Pages
  • orgo - 323 Words
    Benzophenone’s nonpolar nature makes it insoluble with water (which is polar), soluble with methanol (which is of intermediate polarity) and soluble with hexane (which is nonpolar). This is because generally, like dissolves like -- nonpolar will dissolve nonpolar but not polar, and vice versa. But note that this is an imperfect science -- you would expect hexane to dissolve faster and more completely than methanol (because of the differing polarities), but the opposite occurred. This may be...
    323 Words | 1 Page
  • Lab Report Liquid Chromatograpy
    Title: Liquid Chromatography Author: Gloria Contreras Lab Partner: Jose Montanez Instructor: Teresa Potter Date Work Performed: January 13, 2015 Date Submitted: January 20, 2015 Abstract: In this lab, liquid chromatography is used to separate the Red 40 and Blue 1 dyes inside of grape flavored Kool-Aid. It was determined that the 5% isopropanol will remove the Red 40 dye from the stationary phase. The 28% isopropanol will remove the Blue 1 dye from the stationary phase. The...
    1,304 Words | 8 Pages
  • Separation of Chlorophyll a, Chlorophyll B, and Beta Carotene by Paper Chromatography
    Abstract Pigments extracted from different greens have different polarities and may be different colors. Mixed pigments can be separated using chromatography paper. Chromatography paper is able to separate mixed pigments due to their polarity and solubility. Pigments of chlorophyll a, chlorophyll b and beta carotene will be separated on chromatography paper because each has its own polarity and solubility, which results in different distance traveled up the paper. Beta carotene is non-polar so...
    1,323 Words | 4 Pages
  • Determining absorbance of various wavelengths of light for pigments present in Coleus plants
    Determining absorbance of various wavelengths of light for pigments present in Coleus plants Joseph Yung (King Yung) 212831426 Adrian Ionescu Section M 11 February 5, 2014 Absorbance Table Absorbance Spectra Figure 1: Absorption spectra of pigments found, through chromatography, within Coleus plants. The different wavelengths of light were determined by the use of a spectrophotometer Questions...
    826 Words | 3 Pages
  • Extracting Onion Dna - 1346 Words
    Extraction of DNA from an Onion Molecular biologists and biochemists are involved with research in finding out as much as possible about the DNA in plants. DNA was discovered in the 1950’s, there still remains a lot to be known about it, especially how it is used to determine the physical traits that we all have, and how it regulates the workings of the body. deoxyribonucleic acid is a chemical, we can do reactions with it just like we can work with any other chemical. Experiment: Note:...
    1,346 Words | 4 Pages
  • Pre Lab - 587 Words
    1. What is the ideal solvent for crystallization of a particular compound? What is the primary consideration in choosing a solvent for crystallizing a compound? volatile in order to be easily removed from the purified crystals. In selecting a solvent consider that like likes like. Polar compounds dissolve polar compounds and non-polar compounds dissolve non-polar compounds. Solvent will dissolve a large amount of the impure compound at temperatures near the boiling point of the solvent the...
    587 Words | 2 Pages
  • Chem Postlab Maeve - 570 Words
    Philippine Science High School-Central Luzon Campus (S.Y. 2014-2015) CHEMISTRY 1 QTR 3 POST-LAB REP 1 Alessandria Maeve M. Ocampo | 9-Samat | January 5, 2015 RESULTS AND DISCUSSION Solubility is the ability or property of a certain solute to dissolve in a particular solvent. [1] Miscibility, on the other hand, is the ability or property of substances to mix in all proportions or thoroughly. This term is usually used in the mixing of liquid substances. [2] In the experiment, the students...
    570 Words | 4 Pages
  • Organic and Inorganic Compounds - 335 Words
    Comparison between Organic and Inorganic Compounds Organic Compounds | Inorganic Compounds | *Organic Compounds are composed of few elements only.C, H,O,N,S,P and halogens are the most common. | * Inorganic Compounds are composed of all the known elements. | *They are generally found in living matter, i.e., animals and plants. | *They are generally obtained from non-living matter, i.e., minerals. | *They are usually gases, liquids or solids having low melting points. | *They are usually...
    335 Words | 1 Page
  • Solubility Lab - 815 Words
    1. Provide a general discussion of the solubility/miscibility behavior observed in procedure A-D. For part A of the procedure we worked with the solubility of solid compounds in various solvents. The three solid compounds that were worked with during this procedure were benzophenone, malonic acid, and biphenyl. These three solids were then mixed with water (highly polar), methyl alcohol (intermediately polar), and hexanes (nonpolar). When benzophenone is mixed with water the results turned out...
    815 Words | 2 Pages
  • Pharmaceutics Lab Practical 2
    Pharmaceutics Experiment 2  Preparation of a Hand Cream OBJECTIVE 1. To learn the method of preparing a hand cream. 2. To appraise the function of the ingredients in the hand cream. BACKGROUND Cream is a kind of dosage form and particularly hand cream is formulated to carry out a variety of cosmetic functions. Among these are softening and moisturizing the skin; elimination of natural waste products (oils) by emulsification; and cooling the skin by radiation, thus helping to maintain body...
    923 Words | 9 Pages
  • Memo - 647 Words
    Chemistry II lab Why do liquids evaporate at different rates? Section1: Have you ever left a container with some type of liquid in it and wondered how it could it evaporate so quickly? The evaporation of an unpredictable liquid is an endothermic process that results in a temperature decrease. The amount of temperature decrease is related to the strength of intermolecular forces of attraction. The rate of evaporation can be described as the change of temperature divided by the time it takes...
    647 Words | 4 Pages
  • Lecture 07 Intermolecular Forces
    Lecture 7 Intermolecular Force Semester 1: 2014-2015 Instructor Teach Assistants Office Office hours 1 Huynh Kim Lam : Dr. Huỳnh Kim Lâm : Ms. Võ Diệu Ánh Dương Ms. Hồ Như Ngọc : Rm. A1.705 : 9:00-11:00 AM, Thursday (LKH) Chemistry for Engineers (CH011IU) - Lecture 7 - Semester 1: 2014-2015 huynhkimlam.iu@gmail.com / lamhuynh.info Molecular forces Intramolecular forces (bonding forces) – exist within each molecule – influence the chemical properties of the substance – are relatively...
    1,193 Words | 10 Pages
  • Module 2 Lab Report Final Draft
     Colorado Northwestern Community College Science of Biology Mrs. Farrow Lab 3 – Slime Time Submitted by Chase Kenemer 22 February 2015 Abstract Polar solvents dissolve, or pick-up, polar substances and non-polar solvents dissolve, or pick-up, non-polar substances. In the conducted experiment, the polarity of molecules and their properties are explored. The results of using two solvents on both polar and non-polar inks, further verify this to be true. The student conducted the...
    1,935 Words | 8 Pages
  • Elements and Their Compounds - 322 Words
    Elements and compounds are a result of the actions of the valence electrons. There are three types of bonds that I have learned about in the bonding comparison lab. These bonds include ionic, polar covalent, and non-polar covalent. Each of these bonds and the element compounds connected to them has individual solubility, conductivity, melting point, and volatility levels. The three element compounds that will follow are sodium chloride, sucrose, and p-dichlorobenzene. Sodium chloride is an...
    322 Words | 1 Page
  • Purification and Thin-Layer Chromatographic Analysis of Caffeine
    Purpose of the Experiment: The intention of the experiment is to use solvent extraction methods to separate a mixture containing a carboxylic acid and a neutral compound. Once recovered, the solids were purified by recrystallization and examined by thin-layer chromatography, and their identities were derived by melting point and infrared (IR) spectroscopy. Extraction is a procedure that selectively dissolves one or more of the mixture compounds into a proper solvent. Extraction refers...
    1,241 Words | 4 Pages
  • Chromatography - 1688 Words
    Chromatography Abstract Paper chromatography is one of the methods under chromatography, it can use in identifying unknown compounds using known compound and it can also use as a separation technique based on the differences in affinities of components of the mixture to a stationary phase and a mobile phase. In the experiment, the stationary phase was the filter paper onto which the dye samples were dropped onto while the mobile phase was the solvent mixture containing ethanol and water...
    1,688 Words | 6 Pages
  • Physical Properties of Organic Molecules Experiment
     Physical Properties of Organic Molecules Abstract Identifying the physical properties of compounds can be useful in several ways. It helps us to determine the structure of certain compounds, the purity of substances and if a substance is not pure we can figure out how to separate contaminating substances from a compound. In this experiment, I learned how to determine a solid’s melting point and why some melting point ranges may be...
    802 Words | 3 Pages
  • Physical properties of organic compound
    Physical properties of organic compound Low boiling point group: alkane, alkene, alkyne and ether Boiling point is the exact temperature that the state of compound change from liquid to gas, which need to break the intermolecular forces. The stronger the intermolecular forces, the higher the boiling point. Since straight chain alkane, alkene and alkyne only experience dispersion forces, the compound with more carbons have higher boiling point as more carbons contribute more forces....
    415 Words | 2 Pages
  • solubility of organic compounds - 550 Words
    Charles Michael Te Herrera Date Performed: November 18, 2010 2009 – 14077 Ma’am Rea Abuan Experiment # 1 SOLUBILITY OF ORGANIC COMPOUNDS State what types of intermolecular forces are present in solutions formed due to intermolecular attractions between the solute and the solvent. Compound 1 Compound 2 Intermolecular Forces Class S (Water-soluble) Compounds Acetone Water Hydrogen Bonding & London Dispersion Forces Diethyl Ether Dipole –...
    550 Words | 4 Pages
  • Chlorophyll and Polar Groups - 323 Words
    Jamie Milano Biology 150 Photosynthesis Homework April 8, 2013 Reviewing Your Knowledge 2. A pigment solution contains compound A with 4 polar groups and compound B with 2 polar groups. You plan to separate these compounds using paper chromatography with a non-polar solvent. Predict the location of the two bands relative to the solvent front. Explain your answer. Since compound A is probably more polar than compound B, compound B will move further in the chromatography. Since the solvent is...
    323 Words | 2 Pages
  • Crystalization and Melting Points - 1182 Words
    Crystallization and Melting Points Organic Chemistry 221 9/19/2012 Intro/Purpose: The purpose of this lab was to use crystallization to separate a compound from a solvent and be able to choose the best solvent to do so. Then identify an unknown and verify purity using melting points. Solubility contributes to crystallization; because a solute has lower solubility at lower temperatures, which makes the solvent separate from the solution as a solid. This process is important to understand...
    1,182 Words | 4 Pages
  • bio 12 - 2061 Words
    Biology 12 Introduction to Biochemistry Study Guide Kiki Dhaliwal Period: 7 September. 19/2013 10. Atom: Smallest particle of an element that displays the properties of that element. 11. See page 12. a) Ionic bonds are chemical bonds in which ions are attracted to each other by opposite charges. b) Covalent bonds are chemical bonds in which atoms share one pair of electrons. c) Hydrogen bonds are weak that aries between a slightly...
    2,061 Words | 12 Pages
  • Lab #1 Extraction and Thin Layer Chromotography
    Lab #1 Extraction and Thin Layer Chromatography Kaya Gaudet 6784928 January 9, 2013 Line Structure References BenzophenoneBiphenylBenzoic Acid Extraction: A process used to separate different compounds in a mixture based on their solubility in an immiscible substance. Usually an aqueous and organic phase are used. During extraction the desired compound moves one phase and leaves the unwanted substance behind. Extraction normally has to be done a few times to leave all of the...
    1,617 Words | 5 Pages
  • Milk & Food Coloring Lab Report (Importance of Surfactant)
    Importance of Surfactant Introduction Surfactant is an essential component for the respiratory system to function properly. Knowing the physiology of surfactant in the alveoli is important to know when learning the structure of the air sacs and how they work. This experiment is designed to make the understanding of surfactant in the alveolar film easier to learn, because it's not very simple. Surfactant is a detergent-like substance produced by the Type II alveolar cells in the walls of the...
    981 Words | 3 Pages
  • SOLUBILITY - 2364 Words
    Lab 3: Solubility of Organic Compounds Objectives: Understanding the relative solubility of organic compounds in various solvents. Exploration of the effect of polar groups on a nonpolar hydrocarbon skeleton. Introduction: The solubility of a solute (a dissolved substance) in a solvent (the dissolving medium) is the most important chemical principle underlying three major techniques you will study in the organic chemistry laboratory: crystallization, extraction, and...
    2,364 Words | 11 Pages
  • chlorophyll lab report - 1231 Words
    Alyssa Caparelli Organic Chemistry 12A Professor Alston October 28, 2014 Isolation of Chlorophyll and Carotenoid Pigments from Spinach Purpose The purpose of this experiment was to isolate ß-carotene, chlorophyll-A, and chlorophyll-B from spinach using column chromatography. Spinach was dehydrated using ethanol, and the pigments were extracted with dichloromethane. The spinach extracts were dried using CaCl2. Then, the solid pigments were run through a column using a non-polar solvent,...
    1,231 Words | 6 Pages
  • Chemistry: Notes on Kinetics - 1100 Words
    Topic 4 - Bonding 4.1 Ionic bonds 4.1.1 Ionic bond: +ve (cations) and -ve (anions) ions are attracted to each other and form a continuous ionic lattice 4.1.2 Group 1 metals form +1 ions, group 2 metals form +2 ions, metals in group 3 form +3 ions . Examples : Li+, Mg2+, Al3+. Greater ease of ionisation Li->Cs is due to the increased electron shielding of the nuclear attraction caused by additional inner shells of electrons. The easier atoms are to ionise, the more reactive...
    1,100 Words | 6 Pages
  • Extraction Lab - 501 Words
    Experiment 2: Extraction – Evaluation Summary Labs reports must be typed and chemical structures must be drawn with ChemDraw. Report must not exceed three pages (including this page). Page limit does not include any attached spectra or references. ** Deductions for hand written report/structures and exceeding page limit ** Report Breakdown Data/Results: _________________ /10 Discussion: _________________ /10 Report Total: _________________ /20 Other Lab Marks...
    501 Words | 3 Pages
  • Intermolecular Forces - 8826 Words
    Oakland Schools Chemistry Resource Unit Intermolecular Forces Brook R. Kirouac David A. Consiglio, Jr. Southfield‐Lathrup High School Southfield Public Schools Bonding: Intermolecular Forces Content Statements: C2.2: Chemical Potential Energy Potential energy is stored whenever work must be done to change the distance between two objects. The attraction between the two objects may be gravitational, electrostatic, magnetic, or strong force. Chemical potential energy is the...
    8,826 Words | 29 Pages
  • Chem Study Test - 1229 Words
     Test #2 ANSWERS CHM 101 Part I Multiple Choice (2 points each) 1. Which element is most likely to form three covalent bonds? A) C B) Si C) P D) S E) Se 2. A chemical bond formed when two atoms share two pairs of electrons is a ________ bond; it is best described as ________. A) double; covalent B) double; ionic C) single; covalent D) single; ionic E) triple; covalent 3. Which property could describe a covalent compound? A) It conducts electricity when melted. B) Has a...
    1,229 Words | 8 Pages
  • ssss - 665 Words
    SLG Practice Final Exam Chem. 113 True and False 1. The Bohr Theory explains that an emission spectral line is due to an electron losing energy and changing orbitals. 2. 4s orbitals have higher energy than 3d orbitals. 3. An atom with an even number of electrons is always diamagnetic. 4. Covalent bonds are formed by atoms sharing electrons. Multiple Choice 5. Choose the INCORRECT statement about NH2-: a) There is one lone pair on N. b) There are two σ bonds. c) There are no...
    665 Words | 5 Pages
  • Chromatography of Commercial Analgesics - 1868 Words
    Chromatographic Analysis of a Commercial Analgesic’s Active Component I. Abstract This study on Chromatographic Analysis of a Commercial Analgesic’s Active Component seeks to separate, identify, quantify and analyze the active component found in Biogesic®, which may be useful for public awareness despite its wide acceptance and availability in the market. Furthermore, this study applies thin layer chromatography (TLC) technique since it is the simplest, cheapest yet most effective approach...
    1,868 Words | 6 Pages
  • Liquid Chromatography - 1007 Words
    Calculations: a. 1. W = Vend − Vstart W = 1.87 mL – 0.92 mL W = .95 mL Wave = W1+W22 Wave = .95 mL+ .88 mL2 Wave = .915 mL 2. Vstartave = Vstart1+Vstart22 Vstartave = .92 mL+ .90mL2 Vstartave = .910 mL VRave = Vstartave + Wave2 VRave = .910 mL + .915 mL2 VRave = 1.37 mL 3. k’ = Vrave-VmVm k’ = 1.37 mL-.49 mL.49 mL k’ = 1.79 4. α = k'bluek'red α = 4.141.79 α = 2.31 5. R = (VRaveBlue-VRaveRed).5...
    1,007 Words | 5 Pages
  • Chapter 2 - 2416 Words
    Human Physiology ZOOL 2404 Instructor: Dr. Gollahon Copyright © 2009 Pearson Education, Inc., publishing as Pearson Benjamin Cummings Introduction Chapters 1 and 2   Study strategies crucial for success   Attend all lectures, labs, and study sessions   Read your lecture notes and text materials before listening to the audio or watching the video lectures   Devote a block of time each day to your Physiology course   Set up a study schedule and stick to it   Do not procrastinate!...
    2,416 Words | 17 Pages
  • Drylab 3 - 707 Words
    DryLab - III 1. What experimental evidence leads scientist to believe that only quantized electron energy states exist in atoms Answer The evidence was the Niels Bohr experiment on Hydrogen gas that established a quantized model for electron orbits in atoms that effectively explained the spectroscopic behavior of the atoms. 2. a. what is the wavelength ranges of the visible spectrum for electromagnetic radiation Answer The ranges of visible spectrum for human eye is between 390 to...
    707 Words | 3 Pages
  • Synthesis of Aspirin - 1228 Words
    PHCMC1022: Pharmaceutical Chemistry The Synthesis of Aspirin Aditya Vij Feb 17, 2011 Group D1* INTRODUCTION Aspirin or acetylsalicylic acid is one of the most commonly used drugs in the world. It can act as an analgesic, an NSAID, an antipyretic, and a platelet aggregation inhibitor. Aspirin was originally derived from the active ingredient in willow bark called salicin and was first synthesized chemically in 1897. It is prepared by the esterification of the phenolic hydroxyl...
    1,228 Words | 4 Pages
  • Chemistry Outline Ch. 8
    Chapter 8 Bonding: General Concepts Types of Chemical Bonds Bond energy refers to the energy that bonds hold with each other, it is tested by how much energy it takes to break the bond, whatever it takes to break, it takes to create and hold. Ionic Bonding is made between two oppositely charged ions come together to form a bond Ionic Compound is a nonmetal and a metal that bonds. Bond Length is the minimal distance between the two atoms. Covalent Bonding is when atoms “share” electrons in...
    301 Words | 1 Page
  • chemistry - 4054 Words
    Chapter 1: Intermolecular Forces: Liquids, Solids, and Phase Changes Chem 11: General Chemistry 2 Topics 1.1 An Overview of Physical States and Phase Changes 1.2 Quantitative Aspects of Phase Changes 1.3 Types of Intermolecular Forces 1.4 Properties of the Liquid State 1.5 Uniqueness of Water 1.6 The Solid State: Structure, Properties and Bonding  A hot spring on a snowy day The Kinetic Molecular View of the Three States  The characteristic properties of gases,...
    4,054 Words | 40 Pages