DOCSLIB.ORG

Lab Equipment Page 1 of 6

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Lab Equipment Page 1 of 6 Lab Equipment Page 1 of 6 Lab Equipment These GOGGLES are used to protect A WATCHGLASS can be used as a beaker cover, but your eyes from broken glass, chemicals you can also place small amounts of chemicals on it and and flames. then heat it (for example, to evaporate some water from a wet chemical). A FUNNEL is used with filter paper to "A" is the STIRRING ROD, which is used to stir remove undissolved solids from a liquid combinations of chemicals. You can also pour liquid mixture. It also can be used to help pour down along it (as you pour it into another container) to a liquid into a container that has a small keep it from splashing out. "B" is the RUBBER opening (for example, a volumetric POLICEMAN. It is put on the end of the stirring rod, and flask). it keeps the glass rod from scratching a glass beaker or other container. The EVAPORATING DISH is used as a The CLAY TRIANGLE is a frame which can support a container for heating, usually when you container. For example, it can hold a crucible during want to evaporate a liquid from some heating or can hold a funnel during filtering. chemicals. This all-purpose UTILITY CLAMP can This BURET CLAMP is used to hold a buret. The clamp be used to hold many lab equipment is attached to a ring stand. items when it is attached to a ring stand. For example: test tubes, hoses, erlenmeyer flasks, burets. http://www.geocities.com/~chemfun/unit1/labequipment/equipment.html 1/20/2007 Lab Equipment Page 2 of 6 LAB TONGS can be used to hold or CRUCIBLE TONGS are designed up pick up and hold a pick up many items, but work best as crucible. tongs for picking up a hot evaporating dish. BEAKER TONGS are best used to hold HOT HANDS are a chemist's "hot pot holder". They are a hot beaker. used to pick up hot glassware. WIRE GAUZE can be used to support a The RING CLAMP is attached to the ring stand, and is container (such as a beaker or flask) used as a support. For example, it might be used to hold a during heating. When the bunsen burner funnel during filtering. flame is beneath it, the wire gauze helps to spread the flame (and heat) out evenly over the container. A TEST TUBE CLAMP holds a test A RUBBER STOPPER with no holes is used as a "plug" tube during heating. for a test tube or flask. When the stopper as a hole in it, a piece of tubing can be inserted in it (see "A" and "C"). A TEST TUBE is used as a container to A SPOT PLATE has a number of small "wells". hold chemicals during heating or other Chemicals are placed into the small wells, and the reactions, and the TEST TUBE RACK reaction can be observed as it takes place in the "well". supports the test tubes. The BALANCE is used to measure the This is a close up of the numbers on the balance. mass of an object in grams. http://www.geocities.com/~chemfun/unit1/labequipment/equipment.html 1/20/2007 Lab Equipment Page 3 of 6 WEIGHING PAPER looks and feels Weighing paper is folded before it is used (folded into like waxed paper. It is used with the quarters). balance so that the chemicals are placed on the paper instead of directly on the balance. FORCEPS are used to pick up small The CHEMICAL SPATULA is used to transfer items in the laboratory chemicals. Use these instead of your fingers!! A THERMOMETER is used to measure temperature. We use celsius in the chemistry lab. The PIPET BULB is used to fill a pipet with liquid. A WASH BOTTLE is used to rinse Pipets are used to measure liquid. "A" is a glassware in the chemistry lab. It is NOT VOLUMETRIC PIPET. Volumetric pipets are used to used to rinse your eyes! measure one amount only. For example, a 25 mL volumetric pipet is used to measure 25 mL only, and no other amount. "B" is a GRADUATED PIPET. Graduated pipets have a lot of lines drawn on it so that you can measure many different amounts. A SEPARATORY FUNNEL is a glass The ERLENMEYER FLASK is a container which gives container. A mixture of liquids can be only approximate measurements of volume. It is usually poured into it and allowed to separate. used as a mixing vessel or a container for heating. http://www.geocities.com/~chemfun/unit1/labequipment/equipment.html 1/20/2007 Lab Equipment Page 4 of 6 The FLORENCE FLASK is used to hold This round-bottom flask is very similar to a florence a liquid during heating. flask. The MORTAR is the dish, and the PESTLE is the grinder. They are used to The GRADUATED CYLINDER is used to measure the crush or grind up chemicals. volume of liquids in mL. The BEAKER doesn't measure the The VOLUMETRIC FLASK is used the measure one volume of liquids very accurately. It is specific volume of liquid (kind of like a volumetric usually used as a container for mixing or pipet). holding chemicals. The HYDROMETER floats or sinks when placed into a liquid which is The CONDUCTIVITY TESTER is used to measure related to the density of the liquid. whether an object conducts electricity or not. http://www.geocities.com/~chemfun/unit1/labequipment/equipment.html 1/20/2007 Lab Equipment Page 5 of 6 The THISTLE TUBE is a special type of The MAGNETIC STIR BAR is a magnet covered with funnel. teflon. The FLINT LIGHTER is used to ignite The RING STAND offers the support, and the buret the flame of a BUNSEN BURNER. The clamp is holding a BURET (A) and a GAS gas collects inside the small cup, and the COLLECTION TUBE (B). Although these look very spark created ignites the gas. similar, the buret is a glass tube open at both ends. There is a valve at the bottom and it is used to dispense liquids (kind of like a drink machine at McDonalds). The gas collection tube is closed at the top so that gases can collect inside and we can measure the volume of gas. The DROPPER PIPET is a medicine The RUBBER TUBING has a rubber stopper at one end dropper and just dispenses small drops and a PINCH CLAMP at the other end. The pinch clamp of liquid. can close the hose if necessary. The CRUCIBLE and its COVER are FILTER PAPER is used to separate a mixture. It feels used to hold small amounts of chemicals like thick coffee filter paper and has very small holes in http://www.geocities.com/~chemfun/unit1/labequipment/equipment.html 1/20/2007 Lab Equipment Page 6 of 6 during heating at high temperatures, it. It is folded into a "cone" shape. especially if you want to keep oxygen out of the reaction (just put the cover on the crucible). The FILTERING FLASK has a side-arm This HOT PLATE is used as a heat source. which is connected to a low pressure source. This can speed of filtration. CHROMATOGRAPHY PAPER is used to separate a mixture. It comes in rolls, but we use only short pieces. http://www.geocities.com/~chemfun/unit1/labequipment/equipment.html 1/20/2007.
Load more

Recommended publications
  • FS/2018 ORGANIC CHEMISTRY I LAB CHEM 226 (2219) Instructor
    FS/2018 ORGANIC CHEMISTRY I LAB CHEM 226 (2219) Instructor: Terry Bone 120-B Schrenk Hall [email protected] 341-4820 http://www.mst.edu/~tbone 9:00-10:00, Tu-Th, or by appt. Cynthia Bolon 213 Schrenk Hall [email protected] 341-4439 OBJECTIVES: Course objectives are to develop facility with performing laboratory techniques involving the handling of organic chemicals safely and the keeping of proper records of experiments conducted in the laboratory. Crystallization, distillation, extraction and chromatography are emphasized as separation and purification techniques. Melting points, boiling points, and refractive indices are used routinely as measures of purity. Safe handling of chemicals and proper disposal of waste products are priority goals in this course. To help in attaining such goals, the first week of the semester is devoted to SAFETY in the chemistry laboratory. For the remainder of the semester, most of the experiments are conducted on a micro scale. BOOKS: 1. 100 pg. set Organic Chemistry Laboratory Notebook 2. “Organic Chemistry Laboratory Laboratory Techniques, 2nd ed”. Available as free pdf download at https://open.umn.edu/opentextbooks/BookDetail.aspx?bookId=369 3. “Microscale Techniques for the Organic Laboratory, 2nd ed”, (MTOL), Mayo, Pike, Butcher and Trumper, John Wiley & Sons, Inc.,2001 (on reserve at library circulation desk-currently out of print but available on Amazon) 4. “Right to Know pocket guide for School & University Employees”, Genium Publishing Corp., 1990. (optional) (#1 can be purchased from the book store) LAB SYLLABUS: Originally prepared by Prof. S. B. Hanna, modified by D. E. Hoiness, T.Bone. GENERAL GUIDELINES SAFETY Goggles must be worn at all times in the lab.
    [Show full text]
  • EWRE Lab Regulations
    Department of Civil & Environmental Engineering University of Massachusetts College of Engineering University of Massachusetts September 2012 CONTENTS UNIVERSITY OF MASSACHUSETTS ......................................................................................................................... 1 CONTENTS ...................................................................................................................................................................... 2 A. LABORATORY SAFETY AND SECURITY ........................................................................................................... 1 1. GENERAL RULES .......................................................................................................................................................... 1 2. EMERGENCY ................................................................................................................................................................ 2 3. DISPOSAL OF CHEMICALS ............................................................................................................................................ 2 a. What chemical wastes are hazardous or non-hazardous? ...................................................................................... 2 b. Disposal of hazardous wastes ................................................................................................................................. 2 4. FUME HOODS ..............................................................................................................................................................
    [Show full text]
  • Set up for Heating Kcl + Kcloз
    Set Up for heating KCl + KClOз Crucible with unknown mixture plus MnO₂ Extension clamp Bunsen Burner To Gas Line Set Up for heating KCl + KClOз by Ashley Kajioka is licensed under a Creative Commons Attribution 4.0 International License. Procedure: Obtain a porcelain crucible, crucible lid, and a clay triangle. Clean the crucible, removing any loose particulate matter, and check the crucible for cracks. It is not necessary to remove all debris from the crucible as most of it has been fused to the porcelain and cannot be removed. In you fume hood, set up the apparatus as shown in Figure 5. a . b. e. Figure 5: Crucible setup d. a. Ring stand b. Crucible lid c. Iron ring d. Clay triangle c. e. Crucible “Lab Instructions” by Ashley Kajioka is licensed under CC BY 4.0 Using your crucible tongs, practice the following techniques on the cool crucible: Lifting the lid from the crucible Placing the lid ajar so that the crucible is slightly open, but the lid will not fall off, as in Figure 5. Quickly, but gently, pushing the lid from its ajar position to completely cover the crucible Lifting the crucible, with its lid, from the clay triangle Carrying the crucible and lid while supporting from underneath with your wire gauze. Practicing these techniques may seem silly, but it is worth your time to do so. Would you rather repeat a trial because you dropped a crucible, shattering it into a million pieces? With your covered crucible in the clay triangle, fire the crucible for 3-5 minutes.
    [Show full text]
  • Simple Chemical Experiments Simple Chemical Experiments
    SIMPLE CHEMICAL EXPERIMENTS SIMPLE CHEMICAL EXPERIMENTS By ALFRED MORGAN Illustrated by THE AUTHOR APPLETON-CENTURY-CROFTS, INC. NEW YORK COPYRIGHT, 1941, BY D. APPLETON-CENTURY COMPANY, INC All rights reserved. This book, or parts thereof, must not be reproduced in any form without permission of the publisher. PRINTED IN THE UNITED STATES OF AMERICA CONTENTS CHAPTER PAGE I. YOUR LABORATORY i II. EXPERIMENTS WITH PRECIPITATES .... 26 III. EXPERIMENTS WITH SULFUR AND SOME OF ITS COMPOUNDS 54 IV. EXPERIMENTS WITH OXYGEN AND OXYGEN COM­ POUNDS 73 V. EXPERIMENTS WITH GASES AND SOME OF THEIR COMPOUNDS 103 VI. CHEMICAL TESTS 123 VII. SAFE "FIREWORKS" 144 VIII. EXPERIMENTS WITH A FEW ORGANIC COMPOUNDS 156 IX. CHEMICAL TRICKS AND MAGIC 170 X. MISCELLANEOUS EXPERIMENTS 186 XI. PRACTICAL USES FOR YOUR CHEMICAL KNOWL­ EDGE 214 XII. THE CHEMICALS YOU WILL NEED . .231 INDEX OF CHEMICALS 259 GENERAL INDEX 263 V SIMPLE CHEMICAL EXPERIMENTS *> CHAPTER I I YOUR LABORATORY I OST of the experiments described in this book can be M performed without elaborate equipment or apparatus. | For them you will need only a few bottles, test-tubes, meas- i uring-spoons, and an alcohol lamp. Jelly glasses, mayonnaise f jars, small enameled saucepans, and thin glass tumblers can | often be substituted for the beakers, flasks, and glassware of I the professional chemist. t A few of the experiments require beakers, flasks, tubing, | funnels, filter paper, crucibles, mortar and pestle, and Bunsen I burner. The small sizes of these are not expensive. Frequently the cost of apparatus and chemicals can be shared by estab­ lishing a "community" laboratory which is used by two or more experimenters.
    [Show full text]
  • Laboratory Equipment Reference Sheet
    Laboratory Equipment Stirring Rod: Reference Sheet: Iron Ring: Description: Glass rod. Uses: To stir combinations; To use in pouring liquids. Evaporating Dish: Description: Iron ring with a screw fastener; Several Sizes Uses: To fasten to the ring stand as a support for an apparatus Description: Porcelain dish. Buret Clamp/Test Tube Clamp: Uses: As a container for small amounts of liquids being evaporated. Glass Plate: Description: Metal clamp with a screw fastener, swivel and lock nut, adjusting screw, and a curved clamp. Uses: To hold an apparatus; May be fastened to a ring stand. Mortar and Pestle: Description: Thick glass. Uses: Many uses; Should not be heated Description: Heavy porcelain dish with a grinder. Watch Glass: Uses: To grind chemicals to a powder. Spatula: Description: Curved glass. Uses: May be used as a beaker cover; May be used in evaporating very small amounts of Description: Made of metal or porcelain. liquid. Uses: To transfer solid chemicals in weighing. Funnel: Triangular File: Description: Metal file with three cutting edges. Uses: To scratch glass or file. Rubber Connector: Description: Glass or plastic. Uses: To hold filter paper; May be used in pouring Description: Short length of tubing. Medicine Dropper: Uses: To connect parts of an apparatus. Pinch Clamp: Description: Glass tip with a rubber bulb. Uses: To transfer small amounts of liquid. Forceps: Description: Metal clamp with finger grips. Uses: To clamp a rubber connector. Test Tube Rack: Description: Metal Uses: To pick up or hold small objects. Beaker: Description: Rack; May be wood, metal, or plastic. Uses: To hold test tubes in an upright position.
    [Show full text]
  • Flinn Scientific 2019 Purchase Guide a Quick and Easy Checklist of Science Essentials
    Flinn Scientific 2019 Purchase Guide A Quick and Easy Checklist of Science Essentials Use this Purchase Guide as a handy tool for: • Taking Inventory • Order Preparation • Budget Management • Future Planning See your Flinn Scientific Catalog/Reference Manual SCIENTIFIC or visit www.flinnsci.com for product details. It’s Easy to Order Tom Trapp from Flinn Scientific! National Account Development Consultant [email protected] www.flinnsci.com/tom-trapp/sa1001 Online 402-960-5578 (mobile) www.flinnsci.com Offering personal assistance to help meet your science curriculum, supply, and lab safety needs. Email [email protected] Quality Products, Fast Delivery, Fax and Low Prices Guaranteed 1-866-452-1436 (toll free) Mail Flinn Scientific, Inc. P.O. Box 219 Batavia, IL 60510-0219 Phone 1-800-452-1261 7:30 am to 5:00 pm CT Monday through Friday Our Guarantee Flinn Scientific, Inc. guarantees that no sale is complete unless the customer is satisfied. Every item we furnish will either conform to the catalog specification, or we will ask your permission, prior to shipment, to ship an alternative product. If you find a lower published nationally advertised catalog price for an identical item, Flinn will “meet or beat” that price. Use this purchase guide containing popular product recommendations ©2019 Flinn Scientific, Inc. All Rights Reserved. to prepare your order, take inventory, and manage your budget. 1 www.flinnsci.com Flinn Scientific 2019 Purchase Guide 1 Item Rec. Item Rec. Product / Item Name Qty 2019 Price Total Product / Item Name Qty 2019 Price Total No. Qty No. Qty Safety & Personal Protection Equipment Aspirator, Water, Polypropylene AP1203 1 $ 19.30 $ - Apron, rubberized, 27" W X 36" L AP7125 30 $ 15.00 $ - Autoclave, Electric, Portable AP1004 1 $ 865.20 $ - Apron, plastic, 30" W x 36" L AP7120 30 $ 7.25 $ - ♦ Balance, Flinn Triple Beam OB2181 $ 115.00 $ - Gloves, Butyl rubber for conc.
    [Show full text]
  • Flinn Scientific 2017 Purchase Guide a Quick and Easy Checklist of Science Essentials
    Flinn Scientific 2017 Purchase Guide A Quick and Easy Checklist of Science Essentials $25 Coupon Inside Use this Purchase Guide as a handy tool for: • Taking Inventory • Order Preparation • Budget Management • Future Planning See your Flinn Science Catalog Reference Manual SCIENTIFIC or visit www.flinnsci.com for product details. It’s Easy to Order FLINN 2017 Purchase Guide Coupon $25 from Flinn Scientific! Use the Flinn 2017 Purchase Guide and Save $25. How to use: Attach this coupon to your purchase order, write code #FL7012 on your purchase order or enter in the coupon SAVE Online code field of your online order. $25 www.flinnsci.com Valid toward any order of $200 or more. Offer expires December 31, 2017. P.O. Box 219, Batavia, IL 60510 $ 1-800-452-1261, www.flinnsci.com 25 ©2017 Flinn Scientific, Inc. All Rights Reserved. Flinn Coupon #FL7012 Email [email protected] Quality Products, Fast Delivery, Fax and Low Prices Guaranteed 1-866-452-1436 (toll free) Mail Flinn Scientific, Inc. P.O. Box 219 Batavia, IL 60510-0219 Phone 1-800-452-1261 7:30 am to 5:00 pm CT Monday through Friday Our Guarantee Flinn Scientific, Inc. guarantees that no sale is complete unless the customer is satisfied. Every item we furnish will either conform to the catalog specification, or we will ask your permission, prior to shipment, to ship an alternative product. If you find a lower published nationally advertised catalog price for an identical item, Flinn will “meet or beat” that price. Use this purchase guide containing popular product recommendations ©2017 Flinn Scientific, Inc.
    [Show full text]
  • Laboratory Manual
    International Program UAM-Boston University Laboratory Manual Organic Chemistry I 2013-2014 Departamento de Química Orgánica Ernesto Brunet Romero Ana María Martín Castro Ramón Gómez Arrayás Laboratory Manual Table of Contents ............................................................................... 1 Introduction ............................................................................... 2 Prelab preparation ............................................................................... 2 Notebook ............................................................................. 3 Safety .............................................................................. 3 Laboratory Practices and Safety Rules ............................................................. 4 Accidents and injuries ........................................................................... 5 Fires ............................................................................. 5 Chemical Wastes ............................................................................. 6 Cleaning Responsibilities ............................................................................. 6 Lab cleanliness ............................................................................. 6 Laboratory Equipment ............................................................................. 7 Proper use of glassware ............................................................................. 8 Some techniques in lab experiments Heating, cooling and stirring ............................................................................
    [Show full text]
  • Isolation and Characterization of a Natural Product: Caffeine
    Cerritos Community College Organic Chemistry 211 Laboratory Isolation and Characterization of a Natural Product: Caffeine. O O CH3 N H HN – H3C N O N N O N N P OH H2N N O O N N N N O H3C OH purine 2'-deoxyguanosine caffeine 5'-phosphate In this experiment, the techniques of solid-liquid extraction and liquid-liquid extraction will be used to isolate caffeine from tealeaves. A new purification technique, sublimation, will be used to perform the final purification. Caffeine is a member of the class of natural products called alkaloids, which contain nitrogen. Other members of this class include morphine, mescaline, and strychnine. The strong biological activity of these compounds has led to their thorough investigation by many different disciplines. Caffeine possesses the oxidized skeleton of purine, a relative of which can be found as a constituent of DNA (see above). Caffeine is found in many plants with coffee and tea being the most familiar. A cup of coffee or tea provides a 25- to 100-mg “Dose” of caffeine, which stimulates the central nervous system in a widely exploited manner. From the preceding, it is not surprising that caffeine is soluble in hot water, but it is also soluble in dichloromethane, allowing the following extractive protocol to isolate it. This two-step extractive isolation assures that ionic species remain in the aqueous layer while taking advantage of the swelling that water causes in the tea leaves. Simply extracting the tealeaves with dichloromethane directly is ineffective. The sodium carbonate added to the water during the “steeping” stage is to insure that the caffeine and organic acids are deprotonated.
    [Show full text]
  • 5-Solution Unknown
    College Prep Chemistry Lab Manual Written, compiled, edited by Brian Cox and Dan Albritton Thanks to Daniel Knowles, Eddie Taylor, Dylan Muzny, Cammie Wickham Table of Contents Reference Laboratory Safety Guidelines i, ii Lab Experiments Pages Expt #1: 5-Solution Unknown 1-2 Data Analysis: How does the Mass of Pennies Change with Age? 3-5 Expt #2: Relationship between Mass of Reactants to Mass of Products 6-13 Expt #3: Distillation: Separation of two liquids 14-17 Expt #4: Observing the Chemistry of Iron(II) and Iron(III) 18-19 Expt #5: An Activity Series of Metals (Single Replacement Rxns) 20-21 Expt #6: Precipitation Reactions (Double Replacement Rxns) 22-23 Expt #7: Recording Measurements with Correct Sig Figures and 24-26 Uncertainty Expt #8: Mole Concept – How many atoms or molecules are present? 27-30 Expt #9: Empirical Formula of a Hydrate 31-33 Expt #10: Density of Twizzler Sticks 34-35 Expt #11: A Taste of Molarity 36 Expt #12: Preparing Molar Solutions 37- 38 Expt #13: Demos to investigate concept of limiting reactant and optimal 39-42 ratio Expt #14: Determination of Percent Yield – How efficient is your reaction? 43-46 Expt #15: Determination of Universal Gas Constant 47-51 Expt #16: Emission Spectrum and Quantum Leaps 52-55 Expt #17: Beer’s Law: Determining Molar Concentration by Absorbance 56-60 Spectroscopy Expt #18: Relationship between Type of Chemical Bonds and Electrical 61-64 Conductivity Expt #19: Molecular Models (Drawing in 3-D) 65-67 Expt #20: Polar and Non-Polar Molecules in an Electric Field 68-69 Expt #21: Molecular
    [Show full text]
  • Chemistry 1009 Lab Manual University of Louisiana at Monroe
    Chemistry 1009 Lab Manual University of Louisiana at Monroe Department of Chemistry 2010 Version 2.0 Contents Lab Session 1: Laboratory Safety Rules and Check In .................................................. 1 Fire, Injury, Spills and Cleanliness .............................................................................. 2 Desk Assignment Sheet (Chemistry 1009) .................................................................. 4 Commonly Used Equipment (not in the desk drawer)................................................. 5 Lab Session 2, Experiment 1: Introductory Exercises ................................................... 10 Report Form 1 .............................................................................................................. 17 Lab Session 3, Experiment 2: Oxygen ........................................................................... 18 Report Form 2 .............................................................................................................. 21 Lab Session 4, Experiment 3: Preparation of Sodium Chloride .................................... 22 Report Form 3 .............................................................................................................. 25 Lab Session 5, Experiment 4: Law of Definite Proportions .......................................... 26 Report Form 4 ........................................................................................................... 30 Lab Session 6, Experiment 5: Hydrogen and the Activity Series of Metals .................
    [Show full text]
  • Chemistry Lab Course
    Chemistry Lab Course Kantonsschule Zürich Nord Tilmann Geldbach 2015/2016 Chemistry Lab 2 Preface The aim of this lab course is that you learn how to conduct simple chemical experiments and how to document these experiments. You should learn to carefully observe and – based on these observations – come up with explanations and hypotheses about what you have seen. During the course you will learn basic lab techniques, the proper use of standard equipment as well as how to handle harmful chemicals. Organisation It is expected that you have studied the lab instructions of the current experiment before the lesson has started. Remaining questions can be clarified before the lab session starts. In most cases you will be working in pairs. You should always take notes on what you are doing and on what can be observed. There is a work sheet for most of the experiments. You should return this work sheet at the end of the lab session or unasked in the next theory lesson at the latest. These work sheets will be graded with bonus points. The lab should be fun! Therefore make an effort to create an atmosphere that is pleasant both to you and your classmates. You should help each other both during the experiments and during clean-up. Not all substances that are used in the lab are harmless. Pay attention to the safety instructions below and on the sheets of the respective experiment. Safety There are essentially three ways in which a chemical substance may enter your body: by oral uptake, by inhalation or by absorption through the skin.
    [Show full text]