Laboratory Safety Rules and Procedures
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Questions and Answers

What is the first action to take if a laboratory accident occurs?

  • Immediately attempt to fix the equipment.
  • Report it to the teacher and follow their instructions. (correct)
  • Ignore the accident if it seems minor.
  • Leave the laboratory without reporting.

What can significantly reduce the likelihood of laboratory accidents?

  • Using equipment without prior knowledge of its functions.
  • Rushing through experiments to save time.
  • Following laboratory safety rules and handling chemicals carefully. (correct)
  • Ignoring safety rules during experiments.

Which of the following is a recommended practice after a laboratory accident?

  • Follow the emergency actions as instructed by the teacher. (correct)
  • Try to clean up the area before reporting.
  • Leave the area without notifying anyone.
  • Wait for someone else to report the accident.

What component is NOT part of the fire triangle as discussed?

<p>Water (C)</p> Signup and view all the answers

Which action contributes to increasing the temperature needed to ignite charcoal?

<p>Fanning the charcoal (A)</p> Signup and view all the answers

What is the primary role of oxygen in the fire triangle?

<p>To sustain combustion (A)</p> Signup and view all the answers

In the context of starting a barbecue fire, which statement is true?

<p>Lighted paper is necessary for combustion. (A)</p> Signup and view all the answers

The removal of which component from the fire triangle will prevent a fire from occurring?

<p>Oxygen (D)</p> Signup and view all the answers

Why is the fire triangle a crucial concept in fire safety?

<p>It identifies three crucial components needed for a fire to ignite. (B)</p> Signup and view all the answers

How does spraying water on a fire extinguish it?

<p>By cooling down the flames (A)</p> Signup and view all the answers

What is the primary purpose of using a fire beater?

<p>To choke off the oxygen supply (A)</p> Signup and view all the answers

What does creating a fire break accomplish?

<p>It acts as a barrier to contain the fire (B)</p> Signup and view all the answers

What is a crucial component of the fire triangle that needs to be removed to extinguish a fire?

<p>Fuel (A)</p> Signup and view all the answers

Which method would most directly reduce heat in a fire?

<p>Spraying water (C)</p> Signup and view all the answers

In what way does a fire beater act against a fire?

<p>By smothering the flames (C)</p> Signup and view all the answers

Which of the following is NOT a method to prevent a fire from spreading?

<p>Leaving fuel sources nearby (A)</p> Signup and view all the answers

What is the main objective of maintaining a fire break?

<p>To prevent the fire from reaching new areas (C)</p> Signup and view all the answers

Which component is NOT part of the fire triangle?

<p>Water (A)</p> Signup and view all the answers

What occurs to the candle flame when it is covered with an inverted gas jar?

<p>The flame goes out. (A)</p> Signup and view all the answers

What is necessary for a fire to occur?

<p>Fuel, high temperature, and oxygen. (D)</p> Signup and view all the answers

Which scenario correctly describes the relationship within the fire triangle?

<p>Removing any component will extinguish the fire. (C)</p> Signup and view all the answers

What should you do if a fire occurs in the laboratory?

<p>Keep calm and report to the teacher. (D)</p> Signup and view all the answers

What are the three conditions required for a fire to occur?

<p>Oxygen, a high temperature, and a fuel (A)</p> Signup and view all the answers

Which of the following items is commonly used to extinguish fires in a laboratory setting?

<p>Fire extinguisher (C)</p> Signup and view all the answers

What is the significance of hazard warning symbols on chemical containers?

<p>They provide information about potential hazards (C)</p> Signup and view all the answers

If bleach accidentally splashes onto your skin, the appropriate action is to:

<p>Rinse the area thoroughly with water (C)</p> Signup and view all the answers

Flashcards

Laboratory Accidents

Accidents in a laboratory setting, such as spills, fires, or broken glassware.

Emergency Actions

Procedures to follow when an accident occurs in a laboratory, including reporting the event to the teacher and taking appropriate actions.

Laboratory Safety Rules

Maintaining a safe laboratory environment by adhering to specific rules and guidelines.

Keeping Calm in Accidents

Calm demeanor and quick thinking in the face of an unexpected situation.

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Teacher's Role in Accidents

The person responsible for overseeing laboratory activities and providing guidance in case of emergencies.

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Corrosive

A substance that can cause a chemical reaction, often resulting in damage to skin or other materials.

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Fire Triangle

The three elements required for a fire: fuel, oxygen, and a high temperature.

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Fuel

The substance that burns in a fire, providing the energy source.

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Oxygen

The gas in the air that is essential for combustion; a fire needs oxygen to burn.

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High Temperature

A high temperature is needed to ignite fuel and sustain a fire.

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Burning Candle Experiment

An experiment where a burning candle is covered by a gas jar to simulate the conditions needed for combustion.

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Combustion

The substance that reacts with oxygen during a fire, releasing energy in the form of heat and light.

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Heat

The source of energy that ignites the fuel, such as a match or a spark.

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Fire Suppression

The process of removing one of the fire triangle elements, preventing a fire from starting or continuing to burn.

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Fanning a Fire

Increasing the amount of oxygen available to a fire, which causes it to burn brighter and hotter.

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Embers

The ash and leftover material from a fire, which can contain heat and fuel.

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Cooling Embers

The process of removing embers or other materials that could reignite a fire.

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Hazardous Chemicals

Dangerous chemicals that require specific precautions during handling.

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Hazard Warning Symbols

Symbols that convey warnings about the dangers associated with a specific chemical.

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Fire Extinguishing

The process of extinguishing a fire by eliminating one or more of the elements of the fire triangle.

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Fuel (Fire Triangle)

A substance that burns easily and provides fuel for a fire.

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Heat (Fire Triangle)

The source of energy that initiates and sustains a fire.

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Oxygen (Fire Triangle)

The gas that is essential for combustion to occur.

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Fire Fighting

A process that puts out fire.

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Flammable

A substance or object that can quickly burn and cause a large fire.

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Fireproof

A substance or object that can resist fire and burning.

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Absorbent

A material or object that can absorb water and help put out fire.

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Nozzle

A device that helps to control the flow of water in a hose.

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Fire Fighters

A group of people trained to fight fires.

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Fire Station

A place where firefighters store their equipment and trucks.

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Fire Truck

A large vehicle with a pump and water tank used by firefighters.

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Ladder

A piece of equipment used to climb tall buildings.

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Ignition

The primary source of fire.

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Flammable Gas

A substance that catches fire easily and spreads through the air.

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How does water extinguish a fire?

Water cools the burning material, reducing its temperature below the ignition point, effectively breaking the fire triangle.

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How does a fire extinguisher work?

A fire extinguisher directs a powerful blast of chemical agents at the fire, interrupting the chemical reaction and preventing the fire from spreading.

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What is the purpose of a fire blanket?

A fire blanket is a thick, fire-resistant cloth used to smother a fire by depriving it of oxygen, effectively breaking the fire triangle.

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How does a firebreak prevent a fire from spreading?

A firebreak is a cleared area of land that acts as a barrier to prevent the spread of a fire. It removes fuel sources, stopping the fire from crossing the cleared area.

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Why is clearing fuel from the path important?

Removing fuel from the path of a fire prevents it from spreading by eliminating its source of energy needed to burn.

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What is a fire beater?

A fire beater is a tool used to break up burning material to deprive the fire of fuel and oxygen, effectively breaking the fire triangle.

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What is a fireproof material?

A fireproof material is designed to resist burning, preventing or delaying the ignition of materials and reducing the spread of fire.

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What is the purpose of a fire alarm?

A fire alarm is a device that detects smoke or heat and raises an alert to warn people of a fire, allowing for a timely evacuation.

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Study Notes

Laboratory Safety Rules

  • Follow teacher instructions strictly
  • Keep exits and pathways clear
  • Maintain a clean and tidy laboratory
  • Wear safety goggles when heating or mixing substances
  • Tie up long hair and secure school ties during experiments to prevent fire hazards
  • Thoroughly wash hands after experiments
  • Report all accidents to the teacher immediately

General Safety Rules - Do's and Don'ts

  • Do: Follow teacher instructions; keep the lab clean; wear safety goggles; tie back hair; wash hands; report accidents
  • Don't: Enter the lab or conduct experiments without permission; eat, drink, run, or play in the lab; leave experimental setups unattended; point test tubes at others; touch hot objects; touch electric plugs with wet hands; smell or taste chemicals without instructions

Handling Common Laboratory Accidents

  • Cuts: Clean and dress the cut, wash the affected area under running water
  • Heat burns: Wash the affected area under running water
  • Splashes of chemicals on skin: Wash the affected area under running water
  • Splashes of chemicals in eyes: Flush the eyes with distilled water from an eye wash bottle

Fire in the Lab

  • Keep calm and report the fire to the teacher immediately
  • Necessary conditions for a fire to occur: fuel, high temperature and oxygen
  • The fire triangle represents these conditions
  • Methods to put out a fire include turning off gas stove, covering the flame, spraying water
  • Fire extinguishers, sand buckets, and fire blankets are used to extinguish fires.

Oxygen

  • Covering a burning candle with an inverted jar removes oxygen, extinguishing the flame
  • Charcoal fires can be made to burn more brightly by removing ashes and exposing the charcoal to more oxygen.

Methods of Putting Out Fires

  • Turn off the gas stove
  • Cover the flame with a metal lid
  • Spray water onto the fire

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Related Documents

Hilary Sci 1.3 Laboratory Safety Rules PDF

Description

Test your knowledge of essential laboratory safety rules and handling procedures for common accidents. This quiz covers important do's and don'ts, as well as proper responses to emergencies in the lab environment. Ensure you are well-prepared for a safe and effective laboratory experience.

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