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Lab Equipment/ Lab Safety
Terms in this set (98)
-holds solids or liquids that will not release gases when reacted or are unlikely to splatter if stirred or heated
-generally cylindrical glass container with flat bottom
-sometimes has small spout
-contains lines on the side that indicate volume that are not for precise measurements
-also known as "conical flask"
-holds solids or liquids that may release gases during a reaction or that are likely to splatter if stirred or heated.
-has a flat bottom, conical body, cylindrical neck
-makes it easy to mix chemicals without spilling them
-often used in titration and boiling hot liquids
- used for the mixing of chemicals
-has narrow neck that prevents splash exposure
-Has round body and long single neck
-used to measure volumes of liquids
-very accurate and precise
-Can measure volume of small solid by displacement of liquid
Gas Collecting Bottle
-used when large volumes of gases are produced, and must be collected by the displacement of water.
-has a wide mouth
-heavy-walled and made of hard glass
- holds small quantities of substances which are undergoing direct heating by a Bunsen Burner.
-often difficult to clean
-(Used in sodium fusion test)
- made of thin glass
-holds small amounts of material for laboratory testing or experiments
-Finger-like appearance that is open at the top and closed at the bottom
- Usually placed in racks
Test Tube Holder
- holds a test tube which is too hot to handle or should not be touched
-often used to hold test tube while being heated for safety
-self-closed with a spring
Test Tube Brush
- used to clean test tubes and graduated cylinders that have a narrow mouth
Test Tube Rack
- holds upright and organizes multiple test tubes on the laboratory counter
- used when multiple reactions are observed at once, for safety reasons, for safe storage of test tubes, or for transporting multiple test tubes.
-could be used for drying test tubes
- used to close containers to avoid spillage or contamination
-fits tightly to the containers opening.
- used when performing many small scale reaction at one time.
-consists of cavity-like depressions in which only small amounts of reactants can be added at one time.
-holds a small amount of solid, such as the product of a reaction on its surface.
-a circular concave piece of glass.
-(commonly used as a lid for beakers, a house for weighing solids, and for observing drying or evaporation.)
Glass Stir Rod
- used to manually stir solutions and transfer a single drop of a solution.
-usually made of solid glass with rounded ends
- used to transfer a small volume of a liquid (less than one mL)
- (the top is called the "rubber bulb")
- glass tubes that narrow down to a point
Red Litmus Paper
- pH indicator that identifies bases or alkaline
Blue Litmus Paper
- pH indicator that identifies acids
-handheld, hinged instrument used to pick up small objects
-pipe with a wide (often conical) mouth and a narrow stem
- aids in the transfer of a liquid from one vessel to another without spills.
- can be used for filtration with filter paper
-measures and delivers exact volumes of liquids.
- has a spout that delivers a wash solution to a specific area.
-only used for distilled water
-beneficial since unwanted substances cannot get inside
- used to weigh solids that will be transferred to another vessel
-(used in weighing, evaporating, dispensing, and storing)
-broad, flat, flexible blade
-used to dispense solid chemicals from their containers
-scrapes, transfers, or applies powders and paste
- used to move beakers containing hot liquids
-grasps the beaker with two arms joined at the center like scissors
-are used for the heating of nonvolatile liquids and solids.
-produces a single open gas flame.
- used for the heating of stable solid compounds and elements.
-sometimes used for the evaporation of solutions to produce a solid precipitate or concentrated solution
- used for heating certain solids, particularly metals, to very high temperatures.
-very high-temperature resistant
-When heating, it is often held inside a Clay Triangle which sits on a tripod.
- used as a support for porcelain crucibles when being heated over a Bunsen Burner
-made of wires strung in an equilateral triangle with hollow ceramic tubes
- for handling hot crucibles and other hot objects.
- provide a surface for semi-micro scale experiments, such as drop reactions and testing of acids and bases.
- used primarily to cut glass rod, a skill that your instructor will share with you when it becomes useful.
-can trim and sharpen edges
- provide a safe and convenient way to perform reactions that require heating using a Bunsen Burner.
-has a metal pole with a solid, firm base, use to hold or clamp equipment in place
-these connect to a ringstand and provide a stable, elevated platform for the reaction.
- used to secure test tubes, distillation columns, and burets to the ring stand.
-has screw in the middle for adjustment.
Double Buret Clamps
-holds and secures burets over a bunsen burner
-long graduated tubes used in titration (a method that determines the concentration of an unknown solution)
-sheet of thin metal net-like patterns
-sits on the iron rings to provide a place to stand a beaker during heating
Pressed Fiber Pad
- a 4" by 4" square of ceramic fiber that provides a surface for hot beakers so that the beaker does not come in contact with a cold countertop and shatter.
- used to light Bunsen burners
-the flints are expensive so use it wisely
Purpose: _______________ is the #1 priority for students, teachers, and parents in Chemistry class, since students do many hands-on laboratory activities with hazardous chemicals.
1.) In general, the best way to be safe in a laboratory is to be ________________.
2.) You must follow all written and verbal instructions carefully for each procedure. If you do not understand, you must ask the instructor ___________ the experiment.
3.) Students are not allowed to work in a laboratory with an __________ present. Never work alone.
4.) When you ____________ a science room, you should not touch any equipment, chemicals, or other materials in the laboratory area until you are instructed to do so.
5.) You should not ___________, __________, or chew gum in the laboratory. (Do not use glassware as containers for food or beverages)
6.) _______________ experiments are prohibited. Only perform experiments instructed by the teacher.
7.) You must be __________ for your experiments ahead of time by reading all procedures before entering the lab.
8.) Never fool around in the laboratory or pull _________ on your classmates.
9.) Work areas should be kept ______ and tidy at all times. Bring only your most necessary materials (instructions, worksheets, reports, etc..) and leave everything else in classroom area.
10.) Push your ________ under the desk when not in use to keep the aisles clear.
first aid kit, eyewash station, safety shower, fire extinguisher, fire blanket
11.) You should know the locations and operating procedures of these five safety equipments: (list all five by commas)
*you should also know where to find the fire alarm and exits
12.) Always work in a well-ventilated area. Use the _________ when working with volatile substances or poisonous vapors, and never put your head in it.
13.) Be __________ and cautious; notify your instructor immediately of any unsafe conditions you observe.
14a.) Never mix chemicals in __________ when disposing of chemical waste. They are to be used only for water and those solutions designated by the instructor.
14b.) Solid chemicals, metals, matches, filter paper, and all insoluble materials should be disposed in their proper _______________. Always check the labels.
15.) You should always read equipment instructions and ______________ and set them up as directed by the laboratory instructions or your instructor.
16a.) Keep ________ away from face, eyes, mouth, and body while using chemicals or preserved specimens, and always wash with soap and water after performing all experiments.
16b.) Clean all work surfaces and apparatus at the end of the experiment. Return all equipment clean and in ______________ to the proper storage area.
17.) You must stay near your assigned _______________ and personally monitor it at all times. Do not wander around the room, distract other students, or interfere with other experiments.
18.) Students are not permitted in the science ___________________ or preparation areas without permission.
19.) When there is a __________ during the laboratory period, you must close all containers, and turn off any gas valves, fume hoods, or electrical equipment.
20.) Handle all ___________ used in a laboratory activity in a humane manner. Preserved biological materials are to be treated with respect and disposed of properly.
21a.) When you use sharp instruments like knives, always carry with the _________ pointing down and away and grasp only by the handles.
21b.) When using sharp instruments, always cut ________ from the body. Never try to catch falling instruments.
22.) If you have a medical condition, check with your _________ prior to working in the lab .
23.) Students must wear laboratory ___________ any time chemicals, heat, or glassware are used. No exceptions!
24.) _____________ should not be worn in the laboratory unless you have permission from your instructor.
25a.) You must always ________ properly during a laboratory activity. Long hair, dangling jewelry, and loose or baggy clothing should be secured.
25b.) Shoes must completely cover the foot. No _________ allowed.
26.) You should aways wear ___________ over your clothes that are provided for your use.
27.) Report any ____________ (spill, breakage, etc..) or ____________ (cut, burn, etc..) to the instructor immediately, no matter how trivial it may appear.
28.) If you or your lab partner are hurt, you must yell out "_____________" to get the instructor's attention.
29.) If a chemical splashes in your eyes or on your skin, immediately flush with running water from eyewash station or safety shower for at least __________ minutes.
30.) When ____________ thermometers are broken, they should not be touched.
31.) When handling chemicals, do not small, taste, or touch unless instructed to do so. Use the proper _______________ for smelling chemical fumes when instructed.
32.) Check the label on chemical bottles _________ before removing any of the contents. Take only as much chemical as you need.
33.) Never ___________ unused chemicals to their original containers.
34.) Never use mouth suction when filling a _________. Use a rubber bulb or pump.
35.) When you ____________ reagents from one container to another, hold the containers away from your body.
36.) Be careful when handling _________. Use the proper method to dilute them and be careful of the heat produced when you add them to the water and stir the solution. (Particularly Sulfuric Acid).
37.) Handle _________________ liquids over a pan to contain spills and never dispense them near an open flame or source of heat.
38.) Never ___________ chemicals or other materials from laboratory area.
39.) Hold any acids or chemicals securely and walk carefully when you __________ them from one part of the lab to another.
40.) Carry glass tubing, especially long pieces, in a ___________ position to minimize the likelihood of breakage and injury.
41.) Never handle broken glass with your bare hands. Use a brush and _________ to clean it up. Place broken or waste glassware in designated disposal container.
42.) Always __________ glassware before attempting to insert it in a stopper. Always protect your hands with towels or cotton gloves when inserting or removing glass tubing from a rubber stopper. If a piece of glassware becomes "frozen" in a stopper, take it to your instructor.
43.) Fill wash bottles only with __________ and use as intended: rinsing glassware and equipment or adding water to container.
44.) When removing an _______ plug from its socket, grasp the plug, not the cord, with dry hands.
45.) Examine glassware before each use; Never use chipped, cracked, or ___________ glassware.
46.) Report and do not use __________________ electrical equipment. Look for things such as frayed cords, exposed wires, and loose connections.
48.) Do not immerse hot glassware in cold water; it may ________________.
49.) Exercise extreme caution when using a ________________, and light only as instructed by the teacher. Take care that hair, clothing, and hands are a safe distance from the flame at all times. Do not put any substances into the flame unless specifically instructed to do so. Never reach over an exposed flame.
50.) Never leave anything that is being heated, like a lit burner, or is visibly reacting _______________, and always turn the burner or hot plate off when not in use.
51.) You will be instructed in the proper method of heating and_________________ liquids in test tubes. Do not point the open end of a test tube being heated at yourself or anyone else.
52.) Heated metals and glass remain very hot for a long time. They should be set aside to cool and picked up with caution. Use tongs or heat-protective ______________ if necessary.
53.) Never look into a container that is being ________________.
54.) Do not place hot apparatus directly on the laboratory desk. Always use an __________________. Allow plenty of time for hot apparatus to cool before touching it.
55.) When bending glass, allow time for the glass to cool before further handling. Hot and cold glass have the same _____________. Determine if an object is hot by bringing the back of your hand close to it prior to grasping it.
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