CHEMISTRY PRACTICAL (CBSE)
|
|
|
- Willis Preston
- 7 years ago
- Views:
Transcription
1 CHEMISTRY PRACTICAL (CBSE) I. Commonly used apparatus in the laboratory Test tube : It is a hollow cylindrical glass tube with one open and one closed end. It is used for carrying out chemical tests and studying reactions in solutions. Boiling tube : It is a hard glass test-tube made of pyrex which is resistant to chemicals. It is used for strong heating. Beaker : It is a flat bottomed cylindrical glass vessel with a pouring lip. It is used for holding and pouring different liquids and also for mixing solutions during chemical reactions. Flask : These are glass vessels of various shapes used for different purposes. (i) (ii) (iii) EDULABZ INTERNATIONAL Flat-bottomed flask : It is used for storing solutions and carrying out reactions at room temperature. Round-bottomed flask : It is used for carrying out reactions at high temperatures. Conical flask : It is used for carrying out volumetric titrations, storage of liquids and mixing of solutions. 1
2 Glass tube : It is a hollow tube made of glass, used for transporting liquids and gases. A number of glass tubes connected to each other makes a delivery tube. Glass rod : It is a solid cylindrical rod made of glass and is used for stirring solutions. Test-tube holder : It is a metallic clamp fixed on a wooden handle. It is used for holding a test-tube while heating or when a chemical is added. Funnel : It is a cone-shaped glassware with a narrow hollow stem at the lower end. It is used for filtration purposes during which a filter paper made into a cone is wetted and placed inside it. Stand : It contains an iron rod with a heavy rectangular iron base and one or more clamps mounted on the rod, which can be raised or rotated. It is used for holding apparatus such as flasks, test-tubes, etc. or supporting funnels. Test-tube stand : It is a wooden or plastic stand with holes of different sizes and upright pegs. The test tubes are kept in the upright position through the holes. The washed test tubes are inverted on the pegs for drying. 2
3 Watch glass : It is a concave shaped glass plate. It is used as a lid and for weighing chemicals, etc. China dish or evaporating dish or crucible : It is glazed porcelain dish available in various sizes. It is used during evaporation of solutions and crystallisation of salts. Spirit lamp : It is a glass or brass vessel containing alcohol (spirit) through which passes a cotton wick. It is used for heating and can be carried to any place for the purpose. But now a days, it has become outdated. Bunsen burner : It is a specially prepared burner in which natural gas is used as a fuel for burning. It is used for heating various chemicals, solutions metals, etc. Claypipe triangle : It is a triangular frame of steel wires covered with china claypipes. It is used to support a china dish or a crucible. Wire gauge : It is a rectangular wire mesh provided with a thin sheet of asbestos. It helps to distribute the heat evenly under the glass apparatus and thus prevents it from cracking. 3
4 Tripod stand : It is an equilateral cast iron triangle mounted on three legs. It is used to support a wire gauze and glass apparatus such as flasks, beakers, etc. Measuring apparatus : These are graduated glass apparatus used for measurement of liquids. (i) (ii) (iii) Measuring cylinder : It is used for measuring fixed volume of a liquid. Burette : It is used to measure the volume of liquids filled in it by allowing it to come out dropwise from the tap. Pipette : It measures the volume of liquids by sucking the liquid from the top. Gas jar : It is a cylindrical glass vessel used for collecting gases and performing chromatographic analysis. Thistle funnel : It is a specially designed glass funnel with a long hollow stem. It is used for pouring a liquid reactant in a sealed reaction vessel. 4
5 Deflagrating spoon : It consists of a long iron wire with a spoon at one end. It is used to test the action of gases on heated metals and non-metals. Separating funnel : It is a funnel with a leak-proof stopper at one end and a stop cock at the other end. It is used for separating two immiscible liquids by dropping them intermittently. Trough : It is a wide mouthed, flat-bottomed circular vessel made of glass or china. It is used as a container. Beehive shelf : It is a clay vessel provided with two outlets one at the side and the other at the top. It is used for collecting gases by the downward displacement of water. Retort : It consists of a glass apparatus with a round bottom flask and a hollow glass tube. It is used for carrying out distillation experiments. 5
6 Condenser : It is a double walled glass tube with openings at both ends and provided with an inlet and an outlet. It is used for condensing vapours of liquids during distillation. Dessicators : It is a vessel packed with deliquescent or hygroscopic chemicals like calcium chloride or silica gel. It is used for drying chemical substances or keeping them free from moisture. Weighing bottle : It is a small glass bottle with flat-ends, straight walls and a ground glass stopper. It is used for weighing chemicals in it. Reagent bottle : It is a glass bottle provided with an air-light glass stopper. It is used for storing liquid reagents. 6
COMMON LABORATORY APPARATUS
COMMON LABORATORY APPARATUS Beakers are useful as a reaction container or to hold liquid or solid samples. They are also used to catch liquids from titrations and filtrates from filtering operations. Bunsen
Physical and Chemical Properties and Changes
Physical and Chemical Properties and Changes An understanding of material things requires an understanding of the physical and chemical characteristics of matter. A few planned experiments can help you
Apparatus error for each piece of equipment = 100 x margin of error quantity measured
1) Error Analysis Apparatus Errors (uncertainty) Every time you make a measurement with a piece of apparatus, there is a small margin of error (i.e. uncertainty) in that measurement due to the apparatus
Experiment 12- Classification of Matter Experiment
Experiment 12- Classification of Matter Experiment Matter can be classified into two groups: mixtures and pure substances. Mixtures are the most common form of matter and consist of mixtures of pure substances.
Suggested practical apparatus: Combined Science Trilogy and Synergy
Suggested practical apparatus: Combined Science Trilogy and Synergy Through their study of the new GCSE Sciences students must be given the opportunity to experience a wide range of hands-on practical
Mixtures and Pure Substances
Unit 2 Mixtures and Pure Substances Matter can be classified into two groups: mixtures and pure substances. Mixtures are the most common form of matter and consist of mixtures of pure substances. They
SEPARATION OF A MIXTURE OF SUBSTANCES LAB
SEPARATION OF A MIXTURE OF SUBSTANCES LAB Purpose: Every chemical has a set of defined physical properties, and when combined they present a unique fingerprint for that chemical. When chemicals are present
PHYSICAL SEPARATION TECHNIQUES. Introduction
PHYSICAL SEPARATION TECHNIQUES Lab #2 Introduction When two or more substances, that do not react chemically, are blended together, the result is a mixture in which each component retains its individual
PREPARATION FOR CHEMISTRY LAB: COMBUSTION
1 Name: Lab Instructor: PREPARATION FOR CHEMISTRY LAB: COMBUSTION 1. What is a hydrocarbon? 2. What products form in the complete combustion of a hydrocarbon? 3. Combustion is an exothermic reaction. What
HYDRATES 2009 by David A. Katz. All Rights reserved. Reproduction permitted for education use provided original copyright is included.
HYDRATES 2009 by David A. Katz. All Rights reserved. Reproduction permitted for education use provided original copyright is included. OBJECTIVE In this experiment, the properties of a hydrated compound
Remember the best arguments are based on the strongest evidence and can explain why opposing arguments are incorrect.
Magnesium and carbon dioxide Student sheet Burning magnesium in carbon dioxide what will happen? Either the magnesium will go out or it will continue to burn. Which will it be? You will use the evidence
In this experiment, we will use three properties to identify a liquid substance: solubility, density and boiling point..
Identification of a Substance by Physical Properties 2009 by David A. Katz. All rights reserved. Permission for academic use provided the original copyright is included Every substance has a unique set
Reaction of Magnesium with Hydrochloric Acid (Gas Laws) Chemicals Needed:
Reaction of Magnesium with Hydrochloric Acid (Gas Laws) Your Name: Date: Partner(s) Names: Objectives: React magnesium metal with hydrochloric acid, collecting the hydrogen over water. Calculate the grams
Hands-On Labs SM-1 Lab Manual
EXPERIMENT 4: Separation of a Mixture of Solids Read the entire experiment and organize time, materials, and work space before beginning. Remember to review the safety sections and wear goggles when appropriate.
Chemistry 112 Laboratory Experiment 6: The Reaction of Aluminum and Zinc with Hydrochloric Acid
Chemistry 112 Laboratory Experiment 6: The Reaction of Aluminum and Zinc with Hydrochloric Acid Introduction Many metals react with acids to form hydrogen gas. In this experiment, you will use the reactions
PREPARATION AND PROPERTIES OF A SOAP
(adapted from Blackburn et al., Laboratory Manual to Accompany World of Chemistry, 2 nd ed., (1996) Saunders College Publishing: Fort Worth) Purpose: To prepare a sample of soap and to examine its properties.
Back to School Promotion Offers - consumable (Aug 2014)
Back to School Promotion Offers - consumable (Aug 2014) Valid till 30 th November, 2014 Beakers Beaker, Borosilicate glass, low form Code Cap. Price Promotional Price UR-C15720-0005 5ml HKD $7/pc HKD $63/
SCHOOL DONATION DATE PERSON POST Jambiani Primary School Jambiani Primary School Jambiani Secondary School
WILAYA YA KUSINI DISTRICT EDUCATION AND VOCATIONAL TRAINING CENTRE, MAKUNDUCHI Donations 2013/2014 - POL AMEYE, Ubelgiji *************************************************************** SCHOOL DONATION
SOLUBILITY OF A SALT IN WATER AT VARIOUS TEMPERATURES LAB
SOLUBILITY OF A SALT IN WATER AT VARIOUS TEMPERATURES LAB Purpose: Most ionic compounds are considered by chemists to be salts and many of these are water soluble. In this lab, you will determine the solubility,
Stoichiometry Limiting Reagent Laboratory. Chemistry 118 Laboratory University of Massachusetts, Boston
Chemistry 118 Laboratory University of Massachusetts, Boston STOICHIOMETRY - LIMITING REAGENT --------------------------------------------------------------------------------------------------------------------------------------------
The most common active ingredient used in deodorants is aluminium chlorohydrate. But not all deodorants contain aluminium chlorohydrate:
Engineeringfragrance make a deodorant practical activity 2 student instructions page 1 of 5 chemical compounds The most common active ingredient used in deodorants is aluminium chlorohydrate. But not all
Desalination of Sea Water E7-1
Experiment 7 Desalination of Sea Water E7-1 E7-2 The Task The goal of this experiment is to investigate the nature and some properties of sea water. Skills At the end of the laboratory session you should
2 MATTER. 2.1 Physical and Chemical Properties and Changes
2 MATTER Matter is the material of which the universe is composed. It has two characteristics: It has mass; and It occupies space (i.e., it has a volume). Matter can be found in three generic states: Solid;
AN EXPERIMENT IN ALCHEMY: COPPER TO SILVER TO GOLD 2005, 2000, 1996 by David A. Katz. All rights reserved
AN EXPERIMENT IN ALCHEMY: COPPER TO SILVER TO GOLD 2005, 2000, 1996 by David A. Katz. All rights reserved INTRODUCTION One of the goals of the ancient alchemists was to convert base metals into gold. Although
Module 1: History of Fuels. Lecture 6: Fundamental definitions, properties and various measurements
1 P age Module 1: History of Fuels Lecture 6: Fundamental definitions, properties and various measurements 2 P age Keywords: Characterisation, analytical methods, standards 1.3 Fundamental definitions,
Syllabus OC18 Use litmus or a universal indicator to test a variety of solutions, and classify these as acidic, basic or neutral
Chemistry: 9. Acids and Bases Please remember to photocopy 4 pages onto one sheet by going A3 A4 and using back to back on the photocopier Syllabus OC18 Use litmus or a universal indicator to test a variety
Experiment 5 Preparation of Cyclohexene
Experiment 5 Preparation of yclohexene In this experiment we will prepare cyclohexene from cyclohexanol using an acid catalyzed dehydration reaction. We will use the cyclohexanol that we purified in our
experiment5 Understanding and applying the concept of limiting reagents. Learning how to perform a vacuum filtration.
81 experiment5 LECTURE AND LAB SKILLS EMPHASIZED Synthesizing an organic substance. Understanding and applying the concept of limiting reagents. Determining percent yield. Learning how to perform a vacuum
Percentage of Water in Popcorn
Skills Practice DATASHEET FOR IN-TEXT LAB Percentage of Water in Popcorn Popcorn pops because of the natural moisture inside each kernel. When the internal water is heated above 100 C, the liquid water
The Molar Mass of a Gas
The Molar Mass of a Gas Goals The purpose of this experiment is to determine the number of grams per mole of a gas by measuring the pressure, volume, temperature, and mass of a sample. Terms to Know Molar
Isolation of Caffeine from Tea
Isolation of Caffeine from Tea Introduction A number of interesting, biologically active compounds have been isolated from plants. Isolating some of these natural products, as they are called, can require
Stoichiometry Limiting Reagent Laboratory. Chemistry 118 Laboratory University of Massachusetts, Boston
Chemistry 118 Laboratory University of Massachusetts, Boston STOICHIOMETRY - LIMITING REAGENT -----------------------------------------------------------------------------------------------------------------------------
SYNTHESIS AND ANALYSIS OF A COORDINATION COMPOUND OF COPPER
Chemistry 111 Lab: Synthesis of a Copper Complex Page H-1 SYNTHESIS AND ANALYSIS OF A COORDINATION COMPOUND OF COPPER In this experiment you will synthesize a compound by adding NH 3 to a concentrated
A Study On Fire And Global Warming
A Study On Fire And Global Warming By Nicole Curran,Doireann Lynam and Alesi Horan Introduction Our project is a study on fire and global warming. Nicole Curran, Doireann Lynam and Alesi Horan from Colaiste
Recovery of Elemental Copper from Copper (II) Nitrate
Recovery of Elemental Copper from Copper (II) Nitrate Objectives: Challenge: Students should be able to - recognize evidence(s) of a chemical change - convert word equations into formula equations - perform
Solids, Volatile Dissolved and Fixed Dissolved
, 8277 Solids, Volatile Dissolved and Fixed Dissolved Gravimetric Method 1 Scope and Application: For wastewater. 1 Adapted from Standard Methods for the Examination of Water and Wastewater DOC316.53.001206
AIRFREE TECHNIQUE AND SENSITIVE REAGENTS S ECTI O N 1: GLASS W ARE A ND E Q UIP M ENT. A. Using a manifold
AIRFREE TECHNIQUE AND SENSITIVE REAGENTS S ECTI O N 1: GLASS W ARE A ND E Q UIP M ENT Some organic compounds are air sensitive. They can react with the water vapor or oxygen in the air. In order to perform
PURIFICATION TECHNIQUES
DETERMINACIÓN DE ESTRUCTURAS ORGÁNICAS (ORGANIC SPECTROSCOPY) PURIFICATION TECHNIQUES Hermenegildo García Gómez Departamento de Química Instituto de Tecnología Química Universidad Politécnica de Valencia
CHEMICAL REACTIONS OF COPPER AND PERCENT YIELD KEY
CHEMICAL REACTIONS OF COPPER AND PERCENT YIELD Objective To gain familiarity with basic laboratory procedures, some chemistry of a typical transition element, and the concept of percent yield. Apparatus
Experiment 8 Synthesis of Aspirin
Experiment 8 Synthesis of Aspirin Aspirin is an effective analgesic (pain reliever), antipyretic (fever reducer) and anti-inflammatory agent and is one of the most widely used non-prescription drugs. The
Determination of a Chemical Formula
1 Determination of a Chemical Formula Introduction Molar Ratios Elements combine in fixed ratios to form compounds. For example, consider the compound TiCl 4 (titanium chloride). Each molecule of TiCl
Related concepts Kohlrausch s law, equivalent conductivity, temperature dependence of conductivity, Ostwald s dilution law.
Conductivity of strong and weak electrolytes TEC Related concepts Kohlrausch s law, equivalent conductivity, temperature dependence of conductivity, Ostwald s dilution law. Principle It is possible to
To measure the solubility of a salt in water over a range of temperatures and to construct a graph representing the salt solubility.
THE SOLUBILITY OF A SALT IN WATER AT VARIOUS TEMPERATURES 2007, 1995, 1991 by David A. Katz. All rights reserved. Permission for academic use provided the original copyright is included. OBJECTIVE To measure
Extraction: Separation of Acidic Substances
Extraction: Separation of Acidic Substances Chemists frequently find it necessary to separate a mixture of compounds by moving a component from one solution or mixture to another. The process most often
CH204 Experiment 2. Experiment 1 Post-Game Show. Experiment 1 Post-Game Show continued... Dr. Brian Anderson Fall 2008
CH204 Experiment 2 Dr. Brian Anderson Fall 2008 Experiment 1 Post-Game Show pipette and burette intensive and extensive properties interpolation determining random experimental error What about gross error
hij Teacher Resource Bank GCE Chemistry PSA10: A2 Inorganic Chemistry Carry out a redox titration
hij Teacher Resource Bank GCE Chemistry : A2 Inorganic Chemistry Copyright 2009 AQA and its licensors. All rights reserved. The Assessment and Qualifications Alliance (AQA) is a company limited by guarantee
Separation of Amino Acids by Paper Chromatography
Separation of Amino Acids by Paper Chromatography Chromatography is a common technique for separating chemical substances. The prefix chroma, which suggests color, comes from the fact that some of the
Oxidation States of Copper Two forms of copper oxide are found in nature, copper(i) oxide and copper(ii) oxide.
The Empirical Formula of a Copper Oxide Reading assignment: Chang, Chemistry 10 th edition, pp. 55-58. Goals The reaction of hydrogen gas with a copper oxide compound will be studied quantitatively. By
ANALYSIS OF FOOD AND NATURAL PRODUCTS LABORATORY EXERCISE
ANALYSIS OF FOOD AND NATURAL PRODUCTS LABORATORY EXERCISE Determination of total nitrogen in food and crude protein calculation (Kjeldahl method) Responsible person: Assoc.Prof. Ing.Kateřina Riddellová,
Chem 100 Lab Experiment #9 - ACID/BASE INDICATORS
Lab #9 Chem 100 Lab Experiment #9 - ACID/BASE INDICATORS Name: Purpose: In this laboratory we will investigate how indicators can be used to test for the presence of acids or bases in a number of common
How to prepare standard solutions
World Bank & Government of The Netherlands funded Training module # WQ -04 How to prepare standard solutions New Delhi, May 1999 CSMRS Building, 4th Floor, Olof Palme Marg, Hauz Khas, New Delhi 11 00 16
5.0 EXPERIMENT ON DETERMINATION OF TOTAL HARDNESS
5.0 EXPERIMENT ON DETERMINATION OF TOTAL HARDNESS Sl. No. Contents Preamble 5.1 Aim 5.2 Introduction 5.2.1 Environmental Significance 5.3 Principle 5.4 Materials Required 5.4.1 Apparatus Required 5.4.2
KARL FISCHER ELECTROMETRIC TITRATION METHOD FOR DETERMINATION OF WATER CONTENT
KARL FISCHER ELECTROMETRIC TITRATION METHOD FOR DETERMINATION OF WATER CONTENT 1. Introduction Method Revised 10 December 1999 This method takes into consideration new types of Karl Fischer reagent, free
Metalloids will also react with oxygen. Upon reaction with oxygen silicon forms silicon dioxide, the main component of sand.
The Preparation and Properties of xygen Reading assignment: Chang, Chemistry 10 th edition, pp. 135-141. Goals We will observe the thermal decomposition of several oxygen-containing compounds called oxides.
MOISTURE (Karl Fischer, Buffered)
MOIST.03-1 MOISTURE (Karl Fischer, Buffered) PRINCIPLE SCOPE The sample is dissolved in a mixture of methanol and formamide (50:50 v/v) and then titrated with standardized Karl Fischer reagent. The titration
Estimation of Alcohol Content in Wine by Dichromate Oxidation followed by Redox Titration
Sirromet Wines Pty Ltd 850-938 Mount Cotton Rd Mount Cotton Queensland Australia 4165 www.sirromet.com Courtesy of Jessica Ferguson Assistant Winemaker & Chemist Downloaded from seniorchem.com/eei.html
Sugar or Salt? Ionic and Covalent Bonds
Lab 11 Sugar or Salt? Ionic and Covalent Bonds TN Standard 2.1: The student will investigate chemical bonding. Have you ever accidentally used salt instead of sugar? D rinking tea that has been sweetened
General Chemistry I (FC, 09-10) Lab #3: The Empirical Formula of a Compound. Introduction
General Chemistry I (FC, 09-10) Introduction A look at the mass relationships in chemistry reveals little order or sense. The ratio of the masses of the elements in a compound, while constant, does not
Specific volume and absorption properties
Accepted 1980 Fluff Specific volume and absorption properties 1 Scope This SCAN-test Method describes the preparation of test pieces of fluff and a procedure for their use in determining the specific volume
CataLoG No. weight o.d. i.d. GLaSSwaRe
Lead weights with Vikem Vinyl Coating Protect and Stabilize Expensive Glassware Stabilizes vessels in water baths and on benchtops Added insurance against tipping and possible chemical spills Closed ring
#10 Condensation Polymerization: Preparation of Nylon 6/6
#10 Condensation Polymerization: Preparation of Nylon 6/6 Submitted by: Arturo Contreras, Visiting Scholar, Center for Chemical Education, Miami University, Middletown, OH; 1996 1997. I. INTRODUCTION To
SODIUM CARBOXYMETHYL CELLULOSE
SODIUM CARBOXYMETHYL CELLULOSE Prepared at the 28th JECFA (1984), published in FNP 31/2 (1984) and in FNP 52 (1992). Metals and arsenic specifications revised at the 55 th JECFA (2000). An ADI not specified
Hot Leaks. See how the temperature of liquids changes the way they flow.
P h y s i c s Q u e s t A c t i v i t i e s Activity 2 1 Hot Leaks See how the temperature of liquids changes the way they flow. Safety: This experiment requires using the hot water tap and straight pins.
Physical and Chemical Changes
Physical and Chemical Changes Jana Barrow West Point Jr. High 2775 W 550 N 801-402-8100 West Point, UT 84015 jbarrow@dsdmail.net Eighth Grade Integrated Science Standard I: Students will understand the
Calibration of Volumetric Glassware
Chemistry 119: Experiment 2 Calibration of Volumetric Glassware For making accurate measurements in analytical procedures, next in importance to the balance is volumetric equipment. In this section volumetric
EXPERIMENT 7 Reaction Stoichiometry and Percent Yield
EXPERIMENT 7 Reaction Stoichiometry and Percent Yield INTRODUCTION Stoichiometry calculations are about calculating the amounts of substances that react and form in a chemical reaction. The word stoichiometry
The Empirical Formula of a Compound
The Empirical Formula of a Compound Lab #5 Introduction A look at the mass relationships in chemistry reveals little order or sense. The ratio of the masses of the elements in a compound, while constant,
Making Biodiesel from Virgin Vegetable Oil: Teacher Manual
Making Biodiesel from Virgin Vegetable Oil: Teacher Manual Learning Goals: Students will understand how to produce biodiesel from virgin vegetable oil. Students will understand the effect of an exothermic
4.0 EXPERIMENT ON DETERMINATION OF CHLORIDES
4.0 EXPERIMENT ON DETERMINATION OF CHLORIDES Sl. No. Contents Preamble 4.1 Aim 4.2 Introduction 4.2.1 Environmental Significance 4.3 Principle 4.4 Materials Required 4.4.1 Apparatus Required 4.4.2 Chemicals
POPCORN 2005, 2004, 1997 by David A. Katz. All rights reserved. Reproduction permitted for education use provided original copyright is included.
POPCORN 2005, 2004, 1997 by David A. Katz. All rights reserved. Reproduction permitted for education use provided original copyright is included. According to The Popcorn Board, Americans today consume
Chemical versus Physical Changes
Chemical versus Physical Changes Permission to Copy - This document may be reproduced for non-commercial educational purposes Copyright 2009 General Electric Company What are physical and chemical changes?
The Influence of Carbon Dioxide on Algae Growth
The Influence of Carbon Dioxide on Algae Growth The first objective of this experiment is to show that increased atmospheric concentrations of carbon dioxide, CO 2, can stimulate algae growth. The second
Physical Changes and Chemical Reactions
Physical Changes and Chemical Reactions Gezahegn Chaka, Ph.D., and Sudha Madhugiri, Ph.D., Collin College Department of Chemistry Objectives Introduction To observe physical and chemical changes. To identify
Determination of the enthalpy of combustion using a bomb calorimeter TEC
Determination of the enthalpy of TEC Related concepts First law of thermodynamics, Hess s law of constant heat summation, enthalpy of combustion, enthalpy of formation, heat capacity. Principle The bomb
Taking Apart the Pieces
Lab 4 Taking Apart the Pieces How does starting your morning out right relate to relief from a headache? I t is a lazy Saturday morning and you ve just awakened to your favorite cereal Morning Trails and
SOLUBILITY, IONIC STRENGTH AND ACTIVITY COEFFICIENTS
SOLUBILITY, IONIC STRENGTH AND ACTIVITY COEFFICIENTS References: 1. See `References to Experiments' for text references.. W. C. Wise and C. W. Davies, J. Chem. Soc., 73 (1938), "The Conductivity of Calcium
ISOLATION OF CAFFEINE FROM TEA
ISLATIN F CAFFEINE FRM TEA Introduction In this experiment, caffeine is isolated from tealeaves. The chief problem with the isolation is that caffeine does not exist alone in the tealeaves, but other natural
EDTA Titrations 1: Standardization of EDTA and Analysis of Zinc in a Supplement Tablet. by Professor David Cash. September, 2008
CHEMICAL, ENVIRONMENTAL, AND BIOTECHNOLOGY DEPARTMENT EDTA Titrations 1: Standardization of EDTA and Analysis of Zinc in a Supplement Tablet by Professor David Cash September, 2008 Mohawk College is the
Agarose Gel Electrophoresis with Food Color- Teacher Guide
Page 1 of 7 Project Home Gateway to the Project Laboratory Activities What the Project can do in the classroom Biotechnology Resources Favorite resources online and in print Agarose Gel Electrophoresis
Prussian blue and cyanotype printing
CHEM 101lab, fall 2008, J. Peters and cyanotype printing Ferric ferrocyanide, commonly known as, was first synthesized in 1704 in Berlin. has a very intense dark blue color and has been used extensively
Experiment 3: Extraction: Separation of an Acidic, a Basic and a Neutral Substance
1 Experiment 3: Extraction: Separation of an Acidic, a Basic and a Neutral Substance Read pp 142-155, 161-162, Chapter 10 and pp 163-173, Chapter 11, in LTOC. View the videos: 4.2 Extraction (Macroscale);
EXPERIMENT 12: Empirical Formula of a Compound
EXPERIMENT 12: Empirical Formula of a Compound INTRODUCTION Chemical formulas indicate the composition of compounds. A formula that gives only the simplest ratio of the relative number of atoms in a compound
Lab Exercise 3: Media, incubation, and aseptic technique
Lab Exercise 3: Media, incubation, and aseptic technique Objectives 1. Compare the different types of media. 2. Describe the different formats of media, plate, tube etc. 3. Explain how to sterilize it,
Cocaine extraction from Coca Leaves
Cocaine extraction from Coca Leaves Reagents Needed: Kerosene Solid Na2CO3 Distilled H2O H2SO4 5% Solid KMnO4 (6% Solution is used) NH4OH 10% HCl 37% Acetone Diethyl Ether Note: The pictures were taken
Synthesis of Aspirin and Oil of Wintergreen
Austin Peay State University Department of hemistry hem 1121 autions Purpose Introduction Acetic Anhydride corrosive and a lachrymator all transfers should be done in the vented fume hood Methanol, Ethanol
Safety in the Chemistry Laboratory General Safety Equipment Fire extinguisher Red fire alarm Fire blanket Safety shower Drench hose Eye wash station
Reference: Safety in Academic Chemistry Laboratories-Accident Prevention for College and University Students. A Publication of American Chemical Society Joint Board-Council Committee on Chemical Safety.
1. The Determination of Boiling Point
1. The Determination of Boiling Point Objective In this experiment, you will first check your thermometer for errors by determining the temperature of two stable equilibrium systems. You will then use
OXIDATION-REDUCTION TITRATIONS-Permanganometry
Experiment No. Date OXIDATION-REDUCTION TITRATIONS-Permanganometry INTRODUCTION Potassium permanganate, KMnO 4, is probably the most widely used of all volumetric oxidizing agents. It is a powerful oxidant
8.9 - Flash Column Chromatography Guide
8.9 - Flash Column Chromatography Guide Overview: Flash column chromatography is a quick and (usually) easy way to separate complex mixtures of compounds. We will be performing relatively large scale separations
Chemistry of Biodiesel Production. Teacher Notes. DAY 1: Biodiesel synthesis (50 minutes)
Chemistry of Biodiesel Production Teacher Notes DAY 1: Biodiesel synthesis (50 minutes) NOTE: The lab preparation instructions / lab protocol assumes classes of 32 students, with 8 groups of 4 students
105 Adopted: 27.07.95
105 Adopted: 27.07.95 OECD GUIDELINE FOR THE TESTING OF CHEMICALS Adopted by the Council on 27 th July 1995 Water Solubility INTRODUCTION 1. This guideline is a revised version of the original Guideline
Distillation Experiment
Distillation Experiment CHM226 Background The distillation process is a very important technique used to separate compounds based on their boiling points. A substance will boil only when the vapor pressure
Total Dissolved Solids:
Total Dissolved Solids: Going From Tedious to TDS Michael Bechtold, Technical Specialist David Smith, Technical Director Total Dissolved Solids (TDS) What is it and why does it matter? How is it currently
3 PURE SUBSTANCES AND MIXTURES
3 PURE SUBSTANCES AND MIXTURES I. Tick ( ) the most appropriate answer. 1. The constituents of a mixture are present in : (a) a fixed ratio (b) any ratio (c) the ratio of 4 : 1 (d) none of the above 2.
BLOWING UP BALLOONS, chemically
BLOWING UP BALLOONS, chemically PRE LAB DISCUSSION: Today we will be using a closed system. A closed system does not permit matter to enter or exit the apparatus. Lavoisier's classic 12-day experiment,
Standard Operating Procedure for the Determination of Total and Total Dissolved Solids CCAL 13A.2
Standard Operating Procedure for the Determination of Total and Total Dissolved Solids CCAL 13A.2 Cooperative Chemical Analytical Laboratory College of Forestry Oregon State University 321 Richardson Hall
General Chemistry Lab Experiment 6 Types of Chemical Reaction
General Chemistry Lab Experiment 6 Types of Chemical Reaction Introduction Most ordinary chemical reactions can be classified as one of five basic types. The first type of reaction occurs when two or more
Determination of the enthalpy of combustion using a bomb calorimeter TEC. Safety precautions
Safety precautions Naphthalene is harmful if swallowed. May cause cancer. Is further very toxic to aquatic organisms and can have long-term harmful effects in bodies of water. Equipment 1 Bomb calorimeter
Experiment 8 Preparation of Cyclohexanone by Hypochlorite Oxidation
Experiment 8 Preparation of Cyclohexanone by ypochlorite xidation In this experiment we will prepare cyclohexanone from cyclohexanol using hypochlorite oxidation. We will use common household bleach that
Non-polar hydrocarbon chain
THE SCIENCE OF SOAPS AND DETERGENTS 2000 by David A. Katz. All rights reserved Reproduction permitted for educational purposes as long as the original copyright is included. INTRODUCTION A soap is a salt