Oxide Essays & Research Papers

Best Oxide Essays

  • oxides - 728 Words
     ICT  Design  DC  DPP  CE  MS  GRADE 11- CHMISTRY INVESTIGATION investigating the properties of Period 3 oxides Aim The purpose of this experiment is to examine the oxides of Period 3 elements and describe their bonding and structure. Introduction You carry out an investigation along similar lines to the work you did on the chlorides of the elements in Period 3 (Experiment 4.12). However, you will not be asked to test the oxides...
    728 Words | 4 Pages
  • Oxides Research - 2926 Words
    Oxides Research 1. Assess evidence, which indicates increases in atmospheric concentration of oxides of sulfur and nitrogen. Thorough collection of data, surveys, and tests from the 1950's indicate a rising trend in atmospheric concentrations of oxides of sulfur and nitrogen. An enhancement in funding, technological and information resources, has led to wider and more detailed analyses of oxides of sulfur and nitrogen concentrations, and as the diagrams indicate (see diagrams) there is a...
    2,926 Words | 10 Pages
  • Magnesium Oxide - 631 Words
    Aim: to perform a firsthand investigation to compare the physical and chemical properties of magnesium and oxygen when they are experimented to form magnesium oxide Theory: The empirical formula of a compound is the formula that tells us the ratio in which the atoms are present in the compound. To calculate an empirical formula: - Write down the masses of all of the elements present - Convert masses to moles (by dividing by atomic weights in grams) - Divide through by the smallest number...
    631 Words | 2 Pages
  • Finding the Formula of Magnesium Oxide
    Finding the formula of magnesium oxide Aims When magnesium is heated in air, it reacts with oxygen. During this oxidation reaction, magnesium oxide is produced. This increases the mass. If we know the mass of magnesium at the start, and the mass of magnesium oxide produced at the end, we can work out the mass of oxygen which has been combined with the magnesium. We can use these masses to work out the formula of magnesium oxide. Eye protection must be worn Apparatus Crucible and...
    415 Words | 3 Pages
  • All Oxide Essays

  • Oxide and Correct Formulas - 565 Words
    16. Pure nitrogen combines directly with an active metal to form a - Nitride 17. In a sample of solid Al(NO3)3, the ratio of aluminum ions to nitrate ions is - 1:3 18. In a sample of solid calcium phosphate Ca3(PO4)2, the ratio of calcium ions to phosphate ions is - 3:2 19. What is the total number of atoms in (NH4)2SO4? - 15 20. What is the total number of oxygen atoms present in one unit of Mg(ClO3)2? - 6 21. What is the total number of atoms of oxygen in the formula Al(ClO3)3.6H2O?...
    565 Words | 3 Pages
  • Investigation for Magnesium Oxide - 2008 Words
    Hypothesis - The idea I aim to test in this experiment is the relationship between the mass of magnesium and mass of oxygen once the magnesium has been heated and reacted with the oxygen. There will be 3 variables in this experiment. The independent variable will be the mass of magnesium ribbon as different measurements will be taken and used for each trial. The dependant variable will be the mass of Magnesium Oxide, this is a measured variable as the mass of oxygen can be calculated and will...
    2,008 Words | 5 Pages
  • Percent Composition Of Magnesium Oxide
     Percentage Composition of Magnesium Oxide Aleshia Otieno Mr. Taylor SCH3U-01 Lab #4 Monday, November 17, 2014 Introduction Percentage composition is the percentage of a formula mass represented by each element. Percentage composition compares the mass of one part of a substance to the mass of the whole. The law of definite proportions states that a specific compound always contains the same amount of elements in fixed proportions by mass. By finding the percent...
    1,042 Words | 5 Pages
  • Magnesium Oxide Formula - 610 Words
    Working out the Formula of Magnesium oxide Aims When magnesium is heated in air, it reacts with oxygen. During this oxidation reaction, magnesium oxide is produced. This increases the mass. If we know the mass of magnesium at the start, and the mass of magnesium oxide produced at the end, we can work out the mass of oxygen which has been combined with the magnesium. We can use these masses to work out the formula of magnesium oxide. Apparatus Googles...
    610 Words | 3 Pages
  • Magnesium Oxide Lab Report
     Chemistry SL Magnesium Oxide Lab Report Rashpreet Singh Date Performed: November 6, 2014 Research Question: To determine the empirical formula of the compound which forms between magnesium and oxygen. Design: The following figure represents the experiments lab setup, visualize the equipment used. Materials: Done 1. Ceramic evaporating dish 2. Electronic balance 3. Bunsen burner 4. Retort stand, ring clamp, clay triangle 5. Sand Paper 6. Tongs 7. Magnesium Ribbon Safety: Done 1....
    856 Words | 4 Pages
  • Empirical Formula of Magnesium Oxide
    Empirical Formula of Magnesium Oxide Date: Aim: The aim of this experiment was to determine the empirical formula of magnesium oxide. Equipment: · Balance · Crucible and lid · Bunsen burner · Magnesium ribbon (0.2g) · Steel wool · Crucible tongs · Pipe clay triangle · Tripod Procedure: 1. Obtain a clean, dry crucible and lid, then heat them for approximately 5 minutes over a Bunsen burner 2. Clean the surface of a 20 cm strip of magnesium ribbon using steel wool 3....
    621 Words | 3 Pages
  • Empirical Formula of Magnesium Oxide
    DETERMINATION OF EMPIRICAL FORMULA OF MAGNESIUM OXIDE Objective: The objective of this lab is to experimentally determine the empirical formula of Magnesium Oxide. Equipment: • Ring Stand • 5 inch ring • wire gauze • Crucible and Crucible lid • Butane burner • Magnesium • Crucible tongs • Safety glasses • Gloves Experimental Procedure 1. Setup ring stand with five inch ring and triangle. 2. Obtain desired amount of Magnesium, a crucible...
    437 Words | 3 Pages
  • Combustion of Magnesium Oxide - 625 Words
     COMBUSTION OF MAGNESIUM OXIDE DESIGN Aim/Purpose: To calculate the number of moles and the empirical formula of magnesium oxide. Safety precautions: 1) Wear lab coat 2) Wear gogles. 3)Make sure the bunsen burner is working properly and their is no leakage. 4) Wear gloves. Hypothesis: The weight of the magnesium ribbon increases after burning, so this indicated that their was a change in mass. This change happened because of the magnesium ribbon inside the...
    625 Words | 3 Pages
  • Laboratory 3. Empirical Formula Of An Oxide
     Laboratory 3. Empirical Formula Of An Oxide This experiment will demonstrate the law of conservation of mass, and more specifically, how the law can be used to experimentally determine the empirical formula of our intended product, magnesium oxide. In this experiment we will learn how to: 1. heat a sample in a crucible with a Bunsen burner. 2. use the method of weight by difference to determine mass quantities. 3. convert grams to moles. 4. determine the simplest ratio between...
    960 Words | 3 Pages
  • Determining the Empirical Formula of Magnesium Oxide
    Chemistry Lab Report example: Chemistry Laboratory Report (Magnesium Oxide) INTRODUCTION: As we learned before on how to determine the empirical formula of a compound based on the test and also chemical analysis on it. Hence this experiment is mainly goes around with how to determine the empirical formula of Magnesium Oxide following various tight procedures in order to get the knowledge and apply it onto another compounds. We are investigating the empirical formula of Magnesium Oxide...
    1,520 Words | 10 Pages
  • Experimental Determination of the Formula of Magnesium Oxide
    Experimental Determination of the Formula of Magnesium Oxide. Introduction: Magnesium is a mental, it is known to react with oxygen. Magnesium reacts vigorously when heated in the presence of air, which is why we have chosen high heat in our method to facilitate combustion. This oxidation reaction produces magnesium oxide gaining oxygen from the air. When sharing of electrons occur a chemical bond is made and the atoms combine to form a molecule. So, the predicted molecular...
    653 Words | 4 Pages
  • Percentage composition by mass of Magnesium oxide
    Abstract: The purpose of this lab was to test the law of definite proportions for the synthesis reaction of combusting magnesium. In this lab, the polished magnesium ribbon was placed in covered crucible and was heated in order for it to react with Oxygen presented in air and in water provided. The result showed that Magnesium oxide formed through chemical reaction was made up of 60.19% magnesium and 39.81% oxygen, which is approximate proportion of both particles in every Magnesium oxide...
    1,458 Words | 8 Pages
  • Magnesium Oxide Experiment Lab Report
    Objective: One objective was to figure out if the burnt Mg ashes weigh more than the product which is Magnesium Metal. Another objective was determining the formula of the compound that results when Magnesium and Oxygen react. Theory: The purpose of this lab was to confirm the chemical formula of magnesium oxide by comparing the masses of pure magnesium solid prior to any reaction and magnesium oxide solid after a reaction between all of the magnesium and oxygen from the air when heated from...
    339 Words | 2 Pages
  • Determining the Empirical Formula of Magnesium Oxide
    Chemistry Practical Report: Topic: Determining the Empirical Formula of Magnesium Oxide Patrick Doan 11 CHEM 11 26/9/08 Table of contents 1.0 Aim 1 2.0 Theory 2-3 3.0 Materials 4 4.0 Method 4 5.0 Results 4 - 5.1 Qualitative Observations 4 - 5.2 Example Calculations for each Calculated Value 5-7 -5.21 Experimental Values and Associated Errors 5-7 - 5.3 Accumulated Raw Data 8 - 5.4 Mean...
    1,976 Words | 10 Pages
  • Percentage Composition by Mass of Magnesium Oxide
    Percentage composition by mass of magnesium oxide – Report Objective: To measure and calculate the ratio of magnesium to oxygen in magnesium oxide. To compare the lab ratio to the percent composition calculation based on the formula. Hypothesis: Based on the law of definite proportions, the percentage composition of magnesium oxide should be around 60% magnesium and 40% oxygen. Materials: * Goggles * Centigram or analytical balance * 2-4 cm magnesium...
    488 Words | 2 Pages
  • Periodic Trends Across The Period 3 Oxides
     Periodic trends across the period three oxides Clare Smerdon Access to Higher Education Science 08/04/2015 Julie Day Periodic trends across the period three oxides Objective This experiment is intended to explore the relationship between the physical properties of the oxides of Period 3 elements (sodium to chlorine) and their structures. Argon is obviously omitted because it doesn't form an oxide. Hypothesis This experiment will be...
    966 Words | 5 Pages
  • Physical Properties and Reactions of Period 3 Oxides
    PHYSICAL PROPERTIES OF THE PERIOD 3 OXIDES These pages explain the relationship between the physical properties of the oxides of Period 3 elements (sodium to chlorine) and their structures. Argon is obviously omitted because it doesn't form an oxide. A quick summary of the trends The oxides The oxides we'll be looking at are: |Na2O |MgO |Al2O3 |SiO2 |P4O10 |SO3 |Cl2O7 | | | | | |P4O6 |SO2...
    4,428 Words | 15 Pages
  • Global Market For Metal Oxide Nanoparticles To 2022
    The properties of metal oxide nanoparticles/ nanopowders/nanocrystals display enhanced electrical, optical, magnetic and chemical properties from the bulk material of which they are made. Most manufactured nanoparticles are available in varying sizes, shapes and as surface coatings. Their use will increase greatly in the next decade as they are manufactured in hundreds of thousands of tons for use in a diverse range of products in markets including consumer electronics, automobiles, aerospace,...
    526 Words | 4 Pages
  • This is lab report about The Synthesis and Determination of Empirical Formula for Magnesium Oxide.
    The Synthesis and Determination of Empirical Formula for Magnesium Oxide Aim: To determine the empirical formula for magnesium oxide. Data Collection: Table 1 Mass of empty crucible, crucible + Mg (roughly 1cm pieces of a 15-cm piece of magnesium ribbon), and crucible +MgxOy. (mass measured with an analytical balance). The mass of crucible + MgxOy was obtained after a continuous process of heating, letting cool, heating with water enough to immerse the content and letting cool of the Mg....
    519 Words | 4 Pages
  • Lab Report Chem - 907 Words
    Formal Lab Report #1 I. Basics Title of the Experiment: The Empirical Formula of an Oxide Authors: Section Number: Chemistry Location and Date II. Abstract The aim in this lab was to determine the empirical formula of an oxide of magnesium through combustion in air. This was achieved by heating an established mass of magnesium in air inside of a crucible, ultimately attaining a compound that contained Mg and O. The major result of the experiment was the empirical formula of the oxide of...
    907 Words | 3 Pages
  • 0620_s03_ms_1+2+3+5+6.pdf
    w w ap eP m e tr .X w om .c s er June 2003 INTERNATIONAL GCSE MARKING SCHEME MAXIMUM MARK: 40 SYLLABUS/COMPONENT: 0620/01 CHEMISTRY (Multiple Choice) Page 1 Mark Scheme IGCSE EXAMINATIONS – June 2003 Syllabus 0620 Question Number Key Question Number Key 1 2 3 4 5 C B A D A 21 22 23 24 25 B D A B D 6 7 8 9 10 C A A B C 26 27 28 29 30 B D D D B 11 12 13 14 15 B D C D...
    2,383 Words | 43 Pages
  • Lab Report - 347 Words
    Lab Report Abstract: The purpose of this lab was to see how magnesium reacts with oxygen. This reaction must be forced with heat. As magnesium changes to magnesium oxide the mass increased. Procedure: 1. Set up the stand and bunsen burne. 2. Go to crucible heat oven to obtain a crucible. 3. Weigh the crucible and lids mass. 4. Break up the magnesium ribbon on the crucible and weigh the mass of the magnesium, crucible, and lid. 5. Place the crucible on the ring stand over the flame....
    347 Words | 2 Pages
  • Chemistry Past Exam Paper (Cambridge Igcse)
    UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *4308315385* CHEMISTRY Paper 2 Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name in the spaces at the top of this page. Write in dark blue or black pen. You may need to use a pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glue...
    2,372 Words | 24 Pages
  • Science - 562 Words
    Self Heating Food and Drink Cans Heater meals – originally developed for military use – are ready-made self-heating meal packs. They can be heated in many ways – by pressing a button on the packaging, unwrapping and shaking the pack, or pouring the contents of one bag into another and waiting for a few minutes – all of which use exothermic chemical reactions. These meals can be used to motivate students to study such reactions relatively safely and without the use of a burner. Plus there is...
    562 Words | 2 Pages
  • Oxygen and Empirical Formula - 378 Words
    What is the empirical formula of a compound that contains 75% Ag and 25% Cl by mass? AGCL Calculate the approximate number of molecules in a drop of water with a mass of 0.10 g. 3 x 1021 molecules What is the percentage composition of CaSO4? 29.44% Ca, 23.55% S, 47.01% O What mass of calcium bromide is needed to prepare 150.0 mL of a 3.50 M solution? (Assume that the molecular weight of CaBr2 is 200.618 g/mol) 105 g Nitrous oxide (N2O), or laughing gas, is commonly used as an...
    378 Words | 2 Pages
  • The Makeup of Makeup - 1114 Words
    The Chemical Make Up of Makeup The cosmetic industry in America today is one that makes about $20 billion dollars a year and in 1996, according to Shannon Dortch in “Women at the Cosmetics Counter”, nearly 88% of women aged 18-24 were using some type of makeup every single day. Many women, though, are unaware of how makeup is made and the ingredients applied for color, thickness, and moisture. Most cosmetics contain a mixture of some of the following substances. Water, emulsifiers,...
    1,114 Words | 3 Pages
  • Chemical Analysis of Hydraulic Cement
    Designation: C 114 – 07 Standard Test Methods for Chemical Analysis of Hydraulic Cement1 This standard is issued under the fixed designation C 114; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval. 1. Scope* 1.1 These test methods...
    30,122 Words | 129 Pages
  • Chemical Formulas - 1145 Words
    Binary Compounds w/ Fixed Charge Given The Formula, Write The Name Binary Compounds w/ Fixed Charge Given The Name, Write The Formula Binary Compounds w/ Variable Charge: Stock System Given The Name, Write The Formula Binary Compounds w/ Variable Charge: Stock System Given The Formula, Write TheName 1) MgO 2) LiBr 3) Ca3N2 4) Al2S3 5) KI 6) SrCl2 7) Na2S 8) RaBr2 9) MgS 10) AlN 11) Cs2S 12) KCl 13) Sr3P2 14) BaI2 15) NaF 16) CaBr2 17) BeO 18) SrS 19) BF3 20) AlP 21) Rb2O 22) CaI2...
    1,145 Words | 4 Pages
  • Ib Chemistry Ia - Oxidizing Magnesium
    Oxidizing Magnesium AIM: To determine the empirical formula of MgO RAW DATA COLLECTED: Mass of Mg/g | Mass of O2/g | Mass of MgO/g | 0.12 | 0.07 | 0.19 | 0.15 | 0.08 | 0.23 | 0.16 | 0.08 | 0.24 | 0.19 | 0.11 | 0.30 | 0.21 | 0.11 | 0.32 | 0.23 | 0.09 | 0.32 | CONCLUSION: When a mass of magnesium is burnt in air, it combines with the oxygen molecules to form magnesium oxide. The graph doesn’t completely verify the empirical formula of magnesium oxide. There is a slight...
    475 Words | 2 Pages
  • Farhampton Inn - 498 Words
    The Magnesium Oxide Lab In a compound the atoms of different elements are present in numbers whose ratio is usually an integer or a simple fraction. The simplest (or empirical) formula of the compound expresses that ratio. Simplest formulas are determined by establishing the mass of each element present in a sample of the compound. From those masses one finds the number of moles of each element present. The mole ratio is also the atom ratio in the compound and that ratio provides the...
    498 Words | 2 Pages
  • Empirical Formula Lab - 619 Words
    A) January 18, 2011B) Empirical Formula C) The purpose is to determine the empirical formula of a metallic oxide. D) Pre Lab Questions: After heating the metal, the crucible and contents should mass less than it did before it was heated. This is because heating the crucible may rid of other residue that was left in it; bringing it a to a constant mass. A yellow flame will deposit soot on the crucible. This would be a problem because the soot left on the crucible would vary from our...
    619 Words | 3 Pages
  • Us Coking Coal Specifications.Pdf
    High Vol Petro Analysis Coal Analysis As Received Dry Basis % Moisture 7.52 xxxxxx % Ash 5.10 5.51 0.79 % Sul 0.86 %Volatile 37.35 34.54 Fixed Carbon 57.14 52.84 13,522 BTU/lb 14,622 MAF BTU 15,475 FSI 7 Oxidation 96 ____________________________________________________________ ____________ CERTIFICATE OF ANALYSIS PETROGRAPHIC ANALYSIS Date sampled: 09-Mar 11 MACERAL COMPOSITION VOLUME% REACTIVES V-Types 7 8 9 10 7.3 36.4 20.5 2.0 66.2 0.0 3.4 VITRINITE EXINITE RESINITE...
    1,294 Words | 6 Pages
  • Empirical Formula - 378 Words
    Chemistry pre- IB Empirical Formula Observations/Qualitative Data: I have used my sense to observe that the magnesium is a solid that is bendable, is very light and its color is silver. After being put in a Crucible covered by a lid, under a Bunsen burner for a few minutes, it has lit up and turned red. After the experiment was over, the magnesium was turned into an ash/powdery state and its color became white/grey. Data collection and Processing (DCP): Quantitative Data: Weight in grams...
    378 Words | 2 Pages
  • Qualitative Analysis Discussion - 845 Words
    DISCUSSION: Qualitative analysis is used to determine the presence of cations or anions present within a sample and their impurities. Information known, such as chemical and physical properties, about cations and anions can be used to determine what steps should be used to separate the sample into one, specific ion. Qualitative analysis involves forming and decomposing complex ions. Qualitative tests are very sensitive, allowing to detect a very small amount present in sample. Due to...
    845 Words | 3 Pages
  • Importance and Value of Trees - 1077 Words
    Importance and Value of Trees Since the beginning, trees have furnished us with two of life's essentials, food and oxygen. As we evolved, they provided additional necessities such as shelter, medicine, and tools. Today, their value continues to increase and more benefits of trees are being discovered as their role expands to satisfy the needs created by our modern lifestyles. Community and Social Value Trees are an important part of every community. Our streets, parks, playgrounds and...
    1,077 Words | 3 Pages
  • Student - 363 Words
    Exam Review Sheet #1 Balancing Equations and Simple Stoichiometry Answers are provided on the second sheet. Please try to do the worksheet without referring to them, because you’ll be expected to know this stuff the first day of school! Balance the following equations: 1) ___ N2 + ___ F2 ( ___ NF3 2) ___ C6H10 + ___ O2 ( ___ CO2 + ___ H2O 3) ___ HBr + ___ KHCO3 ( ___ H2O + ___ KBr + ___ CO2 4) ___ GaBr3 + ___ Na2SO3 ( ___ Ga2(SO3)3 + ___ NaBr 5) ___ SnO + ___ NF3 ( ___...
    363 Words | 2 Pages
  • Inorganic Nomenclature Handout - 587 Words
    Inorganic Nomenclature I. Compound Type Fixed Charge Metal Binary Salts Description Fixed Charge Metal* + a Nonmetal Rule: Full name of the metal + Stem on the nonmetal + the suffix “ide” Formula Name NaCl Sodium chloride CsF Cesium fluoride CaBr2 Calcium bromide MgO Magnesium oxide Li2S Lithium sulfide Al2O3 Aluminum oxide ZnH2 Zinc hydride AgI Silver iodide SrS Strontium sulfide Ca3N2 Calcium nitride K2Te Potassium telluride Na3N Sodium nitride CaC2 Calcium carbide LiH Lithium hydride...
    587 Words | 10 Pages
  • My Favorite Person - 1545 Words
    http://foricseandbeyond.blogspot.in/ DE’S FOUNDATION BISTUPUR, JSR ACTION OF HEAT ON CHEMICAL COMPOUNDS “Analytical chemistry -I” http://foricseandbeyond.blogspot.in/ metal oxide “Oxides of metals are generally stable to heat and they are considered to be most stable form of compound found in nature.” Oxides of potassium,sodium,calcium,magnesium, aluminum , zinc,iron,lead and copper are stable to heat uO C PbO Zn O http://foricseandbeyond.blogspot.in/ MERCURIC OXIDE...
    1,545 Words | 8 Pages
  • Chemistry Final - 404 Words
    1) How many hydrogen atoms are represented in the formula (CH3)2CH2? 1) _______ A) 8 B) 6 C) 9 D) 5 2) Which has the highest percent mass of Cl? 2) _______ A) C2Cl6 B) CCl4 C) C2Cl4 D) C2Cl2 3) The correct formula for Sodium Nitride is: 3) _______ A) Na3N B) NaNO2 C) NaNO3 D) Na2NO3 4) How many moles of NO3 are there in 6.2g? 4) _______ A) 0.05 B) 10 C) 0.10 D) 384 5) Consider the following equation: 4NH4 + 5O2 → 4 NO + 6H2O How many moles of...
    404 Words | 4 Pages
  • Empirical Formula : Lab Report
    Name: J.T Empirical Formula of Magnesium Oxide: Lab Report The objective of the experiment is to determine the empirical formula of Magnesium Oxide through a procedure of heating magnesium ribbon to react with oxygen to form a magnesium oxide compound with the correct ratio of atoms within each element; 1:1. Equipment: REFER TO EXPERIMENT SHEET Method: REFER TO EXPERIMENT SHEET Results: Object | Mass (g) | Crucible + Lid | 38.23 | Crucible + Lid + Magnesium | 38.57 |...
    530 Words | 3 Pages
  • KEY Formulas Equations 2
    17. In a sample of solid Al(NO3)3, the ratio of aluminum ions to nitrate ions is (1) 1:1 (2) 1:2 (3) 1:3 (4) 1:6 19. What is the total number of atoms in (NH4)2SO4? (1) 10 (2) 11 (3) 14 (4) 15 22. Write the correct formula for the following binary ionic compounds. (a) Lithium fluoride LiF (b) Calcium oxide CaO (c) Aluminum nitride AlN (d) Beryllium chloride BeCl2 (e) Potassium iodide KI (f) Aluminum oxide Al2O3 23. Write the correct formula for the following binary...
    346 Words | 2 Pages
  • Microelectronic Fabrication - 695 Words
    Introduction to Microelectronic Fabrication Lecture 1 January 11th, 2006  Brief overview of microelectronic fabrication •Dominant material: Silicon •Technology size •MOSFET fabrication •Safety Dominant material: Silicon  Obtaining ultrapure Si (other technology) Robert F. Pierret, Semiconductor Device Fundamentals, p.17  Single-crystal formation • Bridgmann method • Czochralski method USNA (lecture notes),...
    695 Words | 12 Pages
  • Beryllium and Magnesium - 538 Words
    Beryllium and magnesium These are just like the reactions with dilute hydrochloric acid, and you have probably been familiar with the reaction between magnesium and dilute sulphuric acid almost since you started doing chemistry. Bubbles of hydrogen are formed, together with colourless solutions of beryllium or magnesium sulphate. For example: Calcium, strontium and barium Calcium sulphate is sparingly soluble, and you can think of strontium and barium sulphates as being...
    538 Words | 3 Pages
  • Moles: Mole and Formula Units
    ***ANSWERS*** CP Chemistry Mole Review Practice Problems Find the mass of 0.89 mol of calcium chloride. 0.89mol x 111 g / 1 mol = 98.8 g Determine the number of moles of C5H12 that are in 362.8g of the compound. 362.8g x 1 mol / 72 g = 5.04 mol Find the mass of 0.159 mol of silicon dioxide. 0.159 mol x 60 g / 1 mol = 9.54 g You are given 12.35 g of C4H8O2. How many moles of the compound do you have? 12.35 g x 1 mol / 88 g =...
    330 Words | 2 Pages
  • Igcse Chemistry Revision Guide
    CHEMISTRY REVISION GUIDE for IGCSE Coordinated Science This revision guide is designed to help you study for the chemistry part of the IGCSE Coordinated Science course. The guide contains everything that the syllabus says you need you need to know, and nothing extra. The material that is only covered in the supplementary part of the course (which can be ignored by core candidates) is highlighted in dashed boxes: Some very useful websites to help you further your understanding include:...
    10,365 Words | 31 Pages
  • Language - 1154 Words
    WORKSHEET MOLE By Sir Shah Murtaza Q1. Potassium reacts with water as shown in the equation. a. Describe what you would see when potassium reacts with water. b. A sample of 0.195 g of potassium was added to 500 cm3 of cold water. When the reaction was finished, 100 cm3 of 0.100mol/dm3 hydrochloric acid was added to form solution X. (i) Calculate the number of moles of hydroxide ions formed when the potassium was added to water. (ii) Calculate...
    1,154 Words | 5 Pages
  • Production of Acetone - 1923 Words
    5.1 MANUFACTURING PROCESSES: Acetone is produced directly or indirectly by propylene. Early processes for the manufacture of acetone were based on the thermal decomposition of calcium acetate or the carbohydrate fermentation of corn starch or molasses. The ready availability of propylene in the 1960s led to routes based on the dehydrogenation of isopropyl alcohol or cumene peroxidation. (1) By Cumene Oxidation (Hock Process). Propene is added to benzene [71-43-2] to form cumene [98-82-8],...
    1,923 Words | 6 Pages
  • Chemical Elements - 664 Words
    Chemical Nomenclature refers to the naming systems used with chemical formulas. This worksheet focuses on the most basic chemicals and nomenclature systems. Please read the information concerning each problem set and then attempt the problems associated with that information. The simplest compounds contain just two elements. Sodium chloride, NaCl, is an example of a binary compound. Several other examples are listed below. Potassium bromide KBr Calcium bromide CaBr2 Lithium fluoride...
    664 Words | 4 Pages
  • Final Review Study Guide
    Quiz 1- 4,5,12 Quiz 3- 14, 16, 18 14. What is the electron configuration for aluminum? 1s22s22p63s23p1 16. The number of electron levels in a magnesium atom is 3, because magnesium is in period number 3. 18. What is the abbreviated electron configuration for nickel (atomic number 28)? [Ar]4s23d8 Quiz 5- 4,14, 18 5. The ion of aluminum is Answer: Al3+. 14. How many valence electrons are in the electron-dot structure of H2O? Answer: The number of valence electrons...
    611 Words | 3 Pages
  • Heating Lead Nitrate - 203 Words
    Aim The aim of the experiment was to investigate the effects of heating Lead Nitrate (Pb(NO3)2. Method About three spatulas full of Lead Nitrate was poured into a small test tube. The Bunsen burner was lit in the usual way and set to the hottest flame. Using a test tube holder the test tube was carefully positioned about five centimetres above the bases of the flame. The experiment was halted prematurely because a crack appeared around the base of the test-tube. Also, every minute or so a...
    203 Words | 1 Page
  • A Speech on Sexism - 2559 Words
    w w w e tr .X m eP e ap UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level .c rs om 5070/11 CHEMISTRY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB recommended) October/November 2011 1 hour *0909424295* READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, Centre number and...
    2,559 Words | 24 Pages
  • Metallurgy: Oxygen and Ore - 1625 Words
    Extractive Metallurgy Minerals are naturally occurring chemical substances in the earth’s crust obtainable by mining. Out of many minerals in which a metal may be found, only a few are viable to be used as sources of that metal. Such minerals are known as ores. Examples: Galena, PbS, etc. It is usually contaminated with earthly or undesired materials known as gangue. The extraction and isolation of metals from ores involve the following major steps: • Concentration of the ore, • Isolation...
    1,625 Words | 6 Pages
  • Empirical Formula of Zinc Iodide
    Experiment 9 Empirical Formula of Zinc Iodide Objectives Upon completion of this experiment, students should have learned: 1. The law of conservation of mass. 2. How to calculate an empirical formula. 3. The concept of limiting reagents. Introduction Synthesis and the determination of empirical formulas are two extremely important parts of chemistry. In this experiment, you will synthesize zinc iodide and determine its empirical formula. The molecular formula gives the...
    1,849 Words | 8 Pages
  • Lithium Ion Batteries - 118 Words
    Lithium ion batteries 1. Introduction Chemical cells are important for our daily lives. There are many different types of cells designed for different uses. Lithium ion batteries are one of the common batteries and they are a secondary cell. 2.1 Chemical principle In lithium ion batteries, both the positive electrode and negative electrode contain lithium compounds. When the cell is discharging, the lithium ions move from the negative electrode to the positive electrode. When the cell is...
    118 Words | 1 Page
  • Silicon Dioxide - 1596 Words
     Silicon dioxide (SiO2) is one of the most common oxides on the surface of earth. Like most oxides, it adopts a polymeric structure. Оксидите се хемиски соединенија што содржат најмалку еден атом на кислород и еден атом од друг хемиски елемент во својата формула. An oxide /ˈɒksaɪd/ is a chemical compound that contains at least one oxygenatom and one other element[1] in its chemical formula. Metal oxides typically contain an anion of oxygen in the oxidation state of −2. Most of the Earth's...
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  • Analytical Chemistry Questions - 894 Words
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