Laboratory Glassware and Equipment Guidelines

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Questions and Answers

What is the name of the device that is able to produce a vacuum by using the venturi effect?

Aspirator

What is the primary function of a beaker?

A beaker is used as a reaction container or to hold liquid or solid samples.

What is the primary function of an Erlenmeyer flask?

Holding reactions or liquid samples.

What tool is used to securely hold a burette in place during laboratory procedures that require precise volume measurement?

A burette clamp is used to safely hold a burette during titration experiments, ensuring accurate and consistent dispensing of liquid. Signup and view all the answers

What is a test tube brush used for?

Cleaning test tubes. Signup and view all the answers

What is the function of a test tube rack?

Test tube racks are used to hold test tubes upright when they contain chemicals, and also hold test tubes upside down to dry. Signup and view all the answers

What is the purpose of a porcelain spatula?

To take small amounts of powdered compounds. Signup and view all the answers

What is the primary application of a medicine dropper?

To add liquids drop by drop. Signup and view all the answers

What is a stirring rod used for?

To mix liquids or solids and liquids. Signup and view all the answers

Explain the function of a funnel.

Funnels are used to transfer liquids from one container to another or to filter liquids when equipped with filter paper. Signup and view all the answers

What is a wire gauze used for in a lab?

Wire gauze is used to support beakers to be heated by Bunsen burners. Signup and view all the answers

What is a metal spatula used for?

Scraping and transferring small amounts of powders or solids. Signup and view all the answers

What is the function of a test tube holder?

Test tube holders are used to hold test tubes when tubes should not be touched. Signup and view all the answers

What does a clay triangle support?

A clay triangle can support a funnel, a crucible, or an evaporating dish. Signup and view all the answers

What is a pipette used for?

To dispense small quantities of liquids. Signup and view all the answers

What is the purpose of an evaporating dish?

To separate liquids and solids from a solution by allowing the water to evaporate into the air. Signup and view all the answers

What is a laboratory tripod used for?

To support flasks and beakers. Signup and view all the answers

What is a laboratory thermometer used for? (Select all that apply)

To measure the boiling point during experiments and the temperature of substances. Signup and view all the answers

What is the purpose of a mortar and pestle?

To grind and mix substances. Signup and view all the answers

What is a watch glass used for?

To hold small samples or to cover beakers or evaporating dishes. Signup and view all the answers

What is a test tube used for?

To hold, mix, and heat chemical experiments Signup and view all the answers

What is a crucible tong used for?

To grasp and take a hot crucible. Signup and view all the answers

What is and alcohol lamp used for?

To heat, sterilize, and combust substances in a laboratory. Signup and view all the answers

What is a crucible and cover used for?

To heat solid chemicals over a burner at high temperatures. Signup and view all the answers

What is a Bunsen burner used for? (Select all that apply)

To heat substances, to combust substances, and to sterilize objects on high heat. Signup and view all the answers

What is a triple beam balance used for?

To measure the mass of a small object. Signup and view all the answers

A burette clamp is used to hold beakers over a Bunsen burner.

False Signup and view all the answers

A test tube brush is used to clean graduated cylinders.

False Signup and view all the answers

Which of these items is NOT used for heating in a lab?

Mortar and Pestle Signup and view all the answers

Which of these is NOT used to dispense liquids?

Stirring rod Signup and view all the answers

Which of these is used to hold a test tube that is too hot to touch?

Test tube holder Signup and view all the answers

Match the following laboratory tools with their corresponding functions:

Spatula = Grinding substances Mortar and pestle = Mixing liquids Beaker = Holding liquids or solid samples Bunsen burner = Heating and sterilizing Pipette = Precisely transferring small volumes of liquid Test tube = Containing liquids and reactions Crucible tongs = Handling hot crucibles Funnel = Filtering liquids Wire gauze = Supporting beakers for heating Signup and view all the answers

Which of these is NOT a safe laboratory practice?

Returning excess reagents to the reagent bottle Signup and view all the answers

Study Notes

Laboratory Glassware and Basic Equipment

Classroom Policies: Classroom discipline is required at all times. Eating, smoking, and playing in the lab are forbidden. Toxic chemicals and cultures are handled, so following rules is crucial. Students caught violating rules face disciplinary action. Students who miss the entire class session are marked absent.
PPE: Wear lab coats or aprons and gloves during experiments. All materials marked with an asterisk must be provided by the student. Students without necessary materials are asked to leave and are marked absent.
Manual Requirements: A copy of the lab manual is mandatory and considered a valid course requirement only for those officially issued. Photocopies are not acceptable for grading in this course. Computations should keep space free for final results. Results should be based on the correct number of significant figures, and units of measurement must be consistent.
Reagent Handling: Do not return excess reagents to the reagent bottle, as it contaminates the original stock. Excess reagents should be passed to another group in need of that specific reagent.
Safety in the Lab: Use the correct apparatus for chemical measurements. Reference information, and read labels before using chemicals. Do not take reagent bottles to your working areas.
Record Keeping: Take initial notes using a pencil. Finalize all answers in ink. All final laboratory reports must be written only in ink.
No Make-Ups: No make-up reports will be given for missed experiments. Students absent during an experiment receive zero credit for that experiment.
Electronic Devices: Turn off all electronic gadgets (cell phones, pagers) during the experiments.

Specific Equipment

Aspirator: A device using the venturi effect to create a vacuum. Contains a fluid (liquid or gas) that flows through a narrowed tube.
Beaker: A reaction container, or for holding liquid or solid samples. Commonly used lab glassware.
Erlenmeyer Flask: Useful for containing reactions or holding liquid samples. A type of flask commonly used in chemistry.
Burette Clamp: Secures a burette in place during experiments requiring precise volume measurements. A holding tool for laboratory equipment.
Test Tube Brush: Cleaning tool for test tubes.
Test Tube Rack: Holds test tubes upright, especially when tubes contain chemicals. Can also be used for upside down drying.
Porcelain Spatula/Spatulas: Tool for taking up small amounts of powdered compounds.
Medicine Dropper: Used to add liquids drop by drop.
Stirring Rod: Used for mixing liquids or solids and liquids.
Funnel: For funneling liquids to another container or filtering when used with filter paper.
Wire Gauze: Supports beakers and other containers for heating over a Bunsen burner. Metal grid with a hole in center.
Metal Spatula: Scraping and transferring powders or solid samples.
Test Tube Holder: Holds test tubes while avoiding contact or touching. A device for safely manipulating test tubes.
Clay Triangle: Placed on a ring attached to a ring stand, as a support for funnel, crucible or evaporating dish. A tri-shaped support.
Pipette: Used for dispensing small quantities of liquids. Graduated for volume measurements.
Evaporating Dish: Tool for separating liquids and solids from a solution. Allows water to evaporate into air. Usually round and shallow bowl shaped container.
Laboratory Tripod: Three-legged platform for supporting flasks and beakers. A tool for holding equipment.
Laboratory Thermometer: Measuring boiling point during experiments and measuring the temperature of substances. A measuring device.
Mortar and Pestle: Used for grinding mixtures. A tool for mixing and crushing/pulverizing substances.
Watch Glass: For holding small samples while covering beakers or evaporating dishes. Round and flat pieces of glass.
Test Tube: Used to hold, mix, and heat materials in chemical experiments. Cylindrical shaped glass tubes.
Crucible Tongs: Tool to handle heated crucibles. Tongs to securely hold heated vessels.
Alcohol Lamp: Used for heating, sterilization, and combustion in a lab. A small lamp used for heating.
Crucible and Cover: Used to heat solid chemicals at high temperatures over burner. A small container for chemicals and a lid for covering it.
Bunsen Burner: Gas burner for heating, combusting, and sterilizing objects. A type of gas burner used in chemistry.
Triple Beam Balance: Measures mass of small objects. A measuring tool for items commonly used in chemistry.

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Description

This quiz covers essential guidelines for laboratory glassware and basic equipment use. It includes classroom policies, personal protective equipment (PPE) requirements, manual specifications, and reagent handling procedures. Understanding these guidelines is crucial for laboratory safety and compliance.