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3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
3.3 work safety
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3.3 work safety

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  • 1. WORK SAFETYWORK SAFETY
  • 2. WORK SAFETYWORK SAFETY Many investigations are conducted in the scienceMany investigations are conducted in the science laboratory. Some of them may be dangerous. Hence,laboratory. Some of them may be dangerous. Hence, laboratory rules must be observed to ensure the safety oflaboratory rules must be observed to ensure the safety of everyone. Take some time to familiarize yourself witheveryone. Take some time to familiarize yourself with these universal science laboratory rules. More importantly,these universal science laboratory rules. More importantly, you should observe these rules at all times while workingyou should observe these rules at all times while working in the laboratory.in the laboratory.
  • 3. General rulesGeneral rules 1. Do not enter the science laboratory without th teacher,s permission.1. Do not enter the science laboratory without th teacher,s permission. 2. Do not eat or drink in the science laboratory.2. Do not eat or drink in the science laboratory. 3. Do not run around in the science laboratory.3. Do not run around in the science laboratory. 4. Do not carry out any experiment without the teacher’s permission.4. Do not carry out any experiment without the teacher’s permission. 5. Read the instructions carefully before you start the experiment. If in5. Read the instructions carefully before you start the experiment. If in doubt, ask your teacher before you proceed.doubt, ask your teacher before you proceed. 6. Do not smell the gases unless instructed by the teacher. Do not6. Do not smell the gases unless instructed by the teacher. Do not breathe in any gas deeply.breathe in any gas deeply. 7. Use apparatus and equipment correctly and carefully.7. Use apparatus and equipment correctly and carefully. 8. Wash all the apparatus after use and dispose of waste8. Wash all the apparatus after use and dispose of waste appropriately. Never throw solid waste material into the sink. Returnappropriately. Never throw solid waste material into the sink. Return apparatus that has been cleaned to its original place.apparatus that has been cleaned to its original place. 9. Do not remove chemicals and apparatus from the science9. Do not remove chemicals and apparatus from the science laboratory.laboratory. 10. Wash your hands thoroughly at the end of the practical lesson.10. Wash your hands thoroughly at the end of the practical lesson. 11. Report all accident, spillages and breakages to your teacher11. Report all accident, spillages and breakages to your teacher immediately.immediately.
  • 4. Apparatus and EquipmentApparatus and Equipment ApparatusApparatus FunctionFunction Bunsen burnerBunsen burner To raise a flame high enoughTo raise a flame high enough for heatingfor heating Tripod standTripod stand For supporting apparatusFor supporting apparatus during heatingduring heating ErlenmeyerErlenmeyer For containing chemicalsFor containing chemicals Test tubeTest tube For containing small amountsFor containing small amounts of chemicalof chemical
  • 5. SymbolSymbol Type of hazardousType of hazardous substancesubstance Proper HandlingProper Handling Examples ofExamples of chemicalschemicals Flammable substanceFlammable substance Keep away fromKeep away from fire heatfire heat Petrol, kerosene,Petrol, kerosene, alcoholalcohol Explosive substaneExplosive substane Follow correctFollow correct procedureprocedure Mixture ofMixture of hydrogen andhydrogen and oxygenoxygen Corrosive substanceCorrosive substance Avoid directAvoid direct contactcontact Strong acid andStrong acid and alkalialkali Poisonous or toxicPoisonous or toxic substancesubstance Don’t drink, eat,Don’t drink, eat, taste thetaste the substancesubstance Mercury, cyanide,Mercury, cyanide, chlorine gaschlorine gas Irritating or stimulateIrritating or stimulate substancesubstance Avoid inhaling theAvoid inhaling the vapourvapour Alcohol,Alcohol, chloroformchloroform Radioactive substanceRadioactive substance Strictly adhere toStrictly adhere to all safetyall safety preauctionspreauctions RadioactiveRadioactive carbon, uraniumcarbon, uranium Hazard SymbolsHazard Symbols
  • 6. ApparatusApparatus FunctionFunction Beaker glassBeaker glass For containing chemicalsFor containing chemicals Measure glassMeasure glass For measuring the volume ofFor measuring the volume of liquidsliquids RackRack To keep test tubeTo keep test tube DroppingDropping pipettepipette For taking small amountsFor taking small amounts (drops) of liquid(drops) of liquid Surgical toolsSurgical tools For perform surgeriesFor perform surgeries filtration funnelfiltration funnel For filtrating liquidsFor filtrating liquids
  • 7. McGraw-Hill © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved
  • 8.  SCIENTISTS USE DIFFERENT TYPESSCIENTISTS USE DIFFERENT TYPES OF APPARATUS TO CARRY OUTOF APPARATUS TO CARRY OUT EXPERIMENTS IN LABORATORIESEXPERIMENTS IN LABORATORIES  THE APPARATUS ENABLE THETHE APPARATUS ENABLE THE SCIENTISTS TO MAKE ACCURATESCIENTISTS TO MAKE ACCURATE MEASUREMENTS ANDMEASUREMENTS AND OBSERVATIONS TOO.OBSERVATIONS TOO.
  • 9.  USE :USE : FORFOR CONTAINING ORCONTAINING OR HEATING SMALLHEATING SMALL AMOUNT OFAMOUNT OF SUBSTANCESSUBSTANCES TEST TUBETEST TUBE
  • 10.  USE :USE : FORFOR CONTAININGCONTAINING CHEMICALS ORCHEMICALS OR COLLECTINGCOLLECTING LIQUIDSLIQUIDS BEAKERBEAKER
  • 11.  USE :USE : FOR CONTAININGFOR CONTAINING CHEMICALS ORCHEMICALS OR COLLECTINGCOLLECTING LIQIUDSLIQIUDS CONICAL FLASKCONICAL FLASK (ELEMEYER)(ELEMEYER)
  • 12.  USE :USE : FOR MEASURINGFOR MEASURING VOLUME OFVOLUME OF LIQUID TO ANLIQUID TO AN ACCURACY OF 1ACCURACY OF 1 CMCM33 MEASURING CYLINDERMEASURING CYLINDER
  • 13.  USE :USE : FOR SCIENTIFIC TEST ESPECIALLYFOR SCIENTIFIC TEST ESPECIALLY FOR THE GROWING OF BACTERIAFOR THE GROWING OF BACTERIA PETRI DISHPETRI DISH
  • 14. • USE /PURPOSE: TO PULL OUT OR TO PICK UP SMALL OBJECTS TWEEZERTWEEZER
  • 15. SPATULASPATULA  USE :USE : FOR MIXING LIQUIDS OR FORFOR MIXING LIQUIDS OR FOR LIFTING CHEMICAL POWDERLIFTING CHEMICAL POWDER
  • 16. CAN YOUCAN YOU MENTION THEMENTION THE OTHEROTHER APPARATUSAPPARATUS LAB??LAB??
  • 17. McGraw-Hill © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved Home workHome work find the otherfind the other apparatus that youapparatus that you can find in the labcan find in the lab

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