Laboratory Safety Quiz

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Questions and Answers

What is a key requirement for footwear in the lab?

  • Shoes do not need to fit snugly.
  • Shoes must completely cover the foot. (correct)
  • Open-toed shoes are acceptable.
  • Any type of shoes can be worn.

What action should NEVER be taken when you spill lab chemicals on yourself?

  • Wipe the area with a cloth. (correct)
  • Notify the teacher immediately.
  • Rinse the affected area with water.
  • Leave the lab to wash your hands.

What should you do with broken glass or metal in the lab?

  • Put it in the trash can.
  • Leave it on the table.
  • Store it in a safe place until cleanup.
  • Notify the instructor for proper disposal. (correct)

Which of the following is NOT recommended when working in the lab?

<p>Tasting chemicals to observe their properties. (D)</p> Signup and view all the answers

What term describes prolonged exposure to harmful substances?

<p>Chronic exposure. (C)</p> Signup and view all the answers

Why should you clean up spilled substances immediately?

<p>To prevent the substance from causing injury. (B)</p> Signup and view all the answers

What should be done if a fire breaks out in the lab?

<p>Wrap the fire blanket around the person or object on fire. (D)</p> Signup and view all the answers

Which of the following safety equipment is NOT mentioned as being accessible in the lab?

<p>Respirator masks. (C)</p> Signup and view all the answers

What is the primary reason for neutralizing an acid spill with a basic solution?

<p>To make the acid less corrosive. (C)</p> Signup and view all the answers

What precaution should be taken when pouring chemicals into a test tube held in your hand?

<p>Avoid pouring chemicals into test tubes held in the hand. (D)</p> Signup and view all the answers

What should you do if you accidentally take too much of a reagent?

<p>Share it with classmates or give it to the instructor. (D)</p> Signup and view all the answers

Which of the following scenarios demonstrates an unsafe way to pour chemicals?

<p>Pouring chemicals into a test tube held in the hand. (C)</p> Signup and view all the answers

Why should you listen to the teacher's instructions during a lab?

<p>To avoid making mistakes that could lead to harm or accidents. (A)</p> Signup and view all the answers

What is the main reason for obtaining precise measurements at eye level while pouring chemicals?

<p>To ensure accurate readings of the volume. (A)</p> Signup and view all the answers

What is the primary concern when a break in glassware is observed during a chemical pour?

<p>The broken glass could cause injury. (B)</p> Signup and view all the answers

What is the main reason for avoiding pouring chemicals into containers held in your hands?

<p>It is easier to spill the chemical. (D)</p> Signup and view all the answers

Which of the following is a mandatory safety equipment item in the lab?

<p>Safety glasses (B)</p> Signup and view all the answers

What is the purpose of wearing a lab coat during experiments?

<p>To protect clothing from chemical spills (C)</p> Signup and view all the answers

Why is it discouraged to wear contact lenses in the lab?

<p>They can trap chemicals against the eyes (D)</p> Signup and view all the answers

Which of the following statements about eating and drinking in the lab is true?

<p>Drinks should not be brought into the lab at all times. (C)</p> Signup and view all the answers

What is the proper way to wear safety glasses in the lab?

<p>On your face (D)</p> Signup and view all the answers

When are gloves necessary in the lab?

<p>Only during dissections (B)</p> Signup and view all the answers

What is a key reason for the safety rule of not tasting substances in the lab?

<p>Some lab materials may have unknown effects. (D)</p> Signup and view all the answers

Why is closed-toe footwear required in the lab?

<p>To prevent injury from spilled chemicals (A)</p> Signup and view all the answers

What is a potential risk of consuming food or drinks in the lab?

<p>You might confuse a glass of water with a chemical. (D)</p> Signup and view all the answers

What should be done with leftover chemicals once taken from their original container?

<p>They should be placed in the waste beaker. (A)</p> Signup and view all the answers

Why is it important to wash your hands at the end of the lab activity?

<p>Some chemicals may be invisible on the skin. (B)</p> Signup and view all the answers

What could happen if leftover chemicals are poured down the drain without dilution?

<p>It may pollute local water supplies. (D)</p> Signup and view all the answers

What is a consequence of keeping other items on your lab bench?

<p>Other items could interfere and cause contamination. (C)</p> Signup and view all the answers

When is it necessary to wash your hands immediately during a lab activity?

<p>If you accidentally spill something on your hands. (B)</p> Signup and view all the answers

Why should one consult the teacher before cleaning up in the lab?

<p>Some chemicals require specific disposal methods. (D)</p> Signup and view all the answers

What should you do if you realize there is gum in your mouth while in the lab?

<p>Spit it out in a waste container. (D)</p> Signup and view all the answers

What should be done immediately if your eyes are exposed to a hazardous chemical?

<p>Flush eyes for at least 15 minutes under cold running water (A)</p> Signup and view all the answers

When using a Bunsen burner, what precaution is necessary regarding hair?

<p>Tie back long hair to prevent contact with the flame (D)</p> Signup and view all the answers

What is the primary function of a graduated cylinder in the laboratory?

<p>To measure the volume of a liquid accurately (C)</p> Signup and view all the answers

How should you respond to a large cut in a laboratory setting?

<p>Apply pressure to the wound and notify the teacher (A)</p> Signup and view all the answers

Which laboratory equipment is designed specifically to hold a test tube during heating?

<p>Test tube clamp (B)</p> Signup and view all the answers

What is a potential consequence of not listening to the teacher's instructions?

<p>Misunderstanding the lab procedure. (D)</p> Signup and view all the answers

Why is it important to label containers in the lab?

<p>To minimize risk and prevent mistakes. (B)</p> Signup and view all the answers

What should you do first if you break glassware in the lab?

<p>Inform your teacher. (A)</p> Signup and view all the answers

How should you safely detect the odor of a chemical?

<p>Hold the container away and waft the scent. (B)</p> Signup and view all the answers

What can happen if you do not tie back long hair in the lab?

<p>It can get tangled in equipment. (C)</p> Signup and view all the answers

What action should be taken if a chemical spill occurs?

<p>Alert your teacher for proper handling. (C)</p> Signup and view all the answers

Why is rolling up loose sleeves important in the laboratory?

<p>To avoid catching fire or contact with chemicals. (A)</p> Signup and view all the answers

What is a key reason for instructing students to alert others when glassware breaks?

<p>To maintain a safe environment for everyone. (B)</p> Signup and view all the answers

Flashcards

Protective Eyewear

Mandatory safety gear to protect eyes during experiments.

Lab Shoes

Shoes that must completely cover the foot during lab work.

Chronic Exposure

Repeated or prolonged contact with a harmful substance over time.

Fire Extinguisher

Safety equipment used to put out small fires in the lab.

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Fire Blanket

A safety blanket used to smother small fires or wrap burning clothing.

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Chemical Disposal

Proper method of disposing chemicals instead of throwing them in trash.

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Unattended Experiments

Leaving experiments without supervision is prohibited for safety reasons.

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Lab Accident Protocol

Notify the teacher about any accident or injury, no matter how small.

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Lab Safety Policy

Guidelines for safety during laboratory activities, including wearing aprons and goggles.

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Eyewash Procedure

Immediate method of rinsing eyes contaminated with hazardous chemicals for at least 15 minutes.

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Small Cut Treatment

Wash with water and notify the teacher for small cuts in the lab.

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Bunsen Burner

Equipment used to heat chemicals using an open flame in the lab.

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Graduated Cylinder

Instrument used for precise volume measurements of liquids.

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Lab Safety Rules

A set of guidelines to ensure safety in the laboratory.

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Mandatory Safety Equipment

Equipment that must be worn in the lab, including safety glasses and lab coats.

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Safety Goggles

Eyewear required to protect eyes from chemicals and debris during experiments.

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Lab Coats

Protective clothing worn to prevent chemical exposure to skin and clothes during experiments.

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Closed-Toe Footwear

Footwear that fully covers the feet, required to protect against spills and dropped objects.

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No Eating or Drinking

Prohibition of consuming food or beverages in the lab to prevent contamination and accidents.

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Understanding Safety Rules

Knowing why safety rules exist enhances learning and memory retention.

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Contact Lenses in Lab

Wearing contacts in the lab is discouraged, even with goggles, due to risks.

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Cleaning Spills

Immediately clean up any spilled substances to prevent hazards.

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Neutralizing Acids

Acids are neutralized with basic solutions like baking soda.

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Neutralizing Bases

Bases are neutralized using acidic solutions like vinegar.

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Chemical Stains

Some compounds can stain skin, leading to unwanted nicknames.

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Pouring Chemicals Safely

Pour chemicals at eye level to ensure precise measurements.

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Avoid Handheld Pouring

Do not pour into containers held by hands; use counters instead.

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Listening to Instructions

Always follow teacher’s instructions during lab activities for safety.

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Spill Protocols

Different spills may require specific clean-up instructions before wiping them up.

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Lab Eating & Drinking Rule

Do not eat or drink in the lab to avoid contamination.

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Chemical Purity

Lab solutions may not be pure, risking contamination.

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Chemical Waste Disposal

Put any chemicals from the stock beaker into a waste beaker.

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Dilution Safety

If safe, pour chemicals down the drain with running water to dilute.

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Hand Washing Timing

Wash hands thoroughly at the end of lab activities.

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Invisible Chemicals

Some chemicals are invisible and may remain on hands.

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Cleaning Protocol

Check with a teacher before cleaning up spills or materials.

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Gum in Lab

Gum can absorb fumes and may lead to ingestion of harmful substances.

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Teacher's Instructions

Listen carefully to teacher's instructions to avoid misunderstandings or errors.

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Labeling Chemicals

Always label containers with chemical contents to avoid dangerous mix-ups.

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Broken Glassware Procedure

If glassware breaks, inform the teacher and follow cleanup procedures to ensure safety.

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Wafting Odors

Safely detect odors by wafting, not smelling directly, to prevent harm from fumes.

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Tie Back Hair

Secure long hair and loose clothing to prevent accidents in the lab.

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Three Dangers of Loose Items

Unsecured hair or sleeves can catch fire, contaminate samples, or cause spills.

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Chemical Identification

Use labels to distinguish clear liquids like acids and other solutions to ensure safety.

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Emergency Response to Spills

Notify the teacher about spills and follow their instructions for safe resolution.

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Study Notes

Lab Safety Overview

  • Lab safety is crucial for safe experimentation
  • WHMIS guidelines are important for understanding safety protocols
  • Brainstorming past experiences can help with recall
  • MSDS sheets are essential for understanding procedures for chemicals
  • Lab equipment knowledge is necessary
  • Personal conduct: follow instructions, wear safety goggles, never taste anything
  • Understanding the rules is crucial; understanding the why is key
  • Importance of safety equipment (mandatory); and optional equipment
  • Safety glasses are mandatory, prescription glasses are acceptable.
  • Safety glasses should be worn on the face, not as a hair accessory; contact lenses are discouraged.
  • Lab coats are mandatory during chemical use. Closed-toe shoes are mandatory.
  • Loose clothing in the lab is discouraged.
  • Hair should be tied up to prevent fire hazards and for safety overall.
  • Spillage cleanup procedures are essential and must be followed. Specific procedures exist for corrosive and acid spills.

Lab Safety Rules

  • Rule #1: Wear the proper safety equipment (mandatory equipment for every lab).
    • Safety glasses are mandatory.
    • Lab coats are mandatory when chemicals are used (not for bio labs with microscopes).
    • Closed-toe shoes are required.
    • Gloves are only needed during dissections.
  • Rule #2: Don't eat or drink in the lab.
  • Rule #3: Leftover chemicals disposal procedures: always pour the chemicals into the waste beaker.
  • Rule #4: Wash your hands thoroughly at the end of the lab activity.
  • Rule #5: Clean up spilled substances immediately. Neutralization is required for some spilled substances.
  • Rule #6: Pour chemicals properly. Avoid spilling.
    • Pour acids into water, not water into acid.
  • Rule #7: Always listen to the teacher's instructions.
  • Rule #8: Label any containers.
  • Rule #9: Procedure for handling broken glassware. Inform teacher and follow procedure.
  • Rule #10: Detect substance odors safely.
    • Waft the scent towards your nose, not your face.

Lab Equipment

  • Beaker
  • Test tube
  • Bunsen burner
  • Erlenmeyer flask
  • Test tube clamp
  • Scoopula
  • Buchner funnel
  • Graduated cylinder
  • Mortar & pestle
  • Crucible tongs
  • Watch glass
  • Pipette and bulb
  • Weigh boat
  • Safety goggles
  • Hot plate
  • Medicine dropper
  • Iron ring clamp
  • Voltmeter
  • Ampmeter
  • Spot plate
  • Tweezers
  • Funnel
  • Test tube rack
  • Test tube brush

WHMIS

  • WHMIS stands for Workplace Hazardous Materials Information System.
  • It is used in labs by industry personnel.
  • WHMIS has 8 symbols.
  • WHMIS symbols are in circles; they are printed in black or red.

HSHS

  • HSHS stands for Household Safety Hazard Symbols.
  • It is used in households and by the average consumer.
  • HSHS has 3 symbols; symbols are in shapes and colors that indicate the hazard degree.

MSDS

  • MSDS stands for Material Safety Data Sheets.
  • MSDS sheets are provided by the manufacturer.
  • MSDS sheets give detailed information about potential hazards of chemicals, health effects, first aid, spill procedures, etc.

Emergency Planning

  • In case of accidents or minor injuries, notify the teacher.
  • Know the locations of fire extinguishers, eyewash stations, showers, and fire blankets.

Homework

  • Complete WHMIS and HHDS worksheets found in the note pack (pages 7-12).
  • Read pages 3 to 11 and check and reflect on sections 1, 7, and 11.

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