The document discusses safety rules for science laboratories. It states that laboratory experiments can be dangerous, so rules must be followed to ensure everyone's safety. Some general rules include not entering the lab without permission, eating, drinking, running or carrying out experiments without permission. When doing experiments, students should read instructions carefully, not smell gases without instruction, use equipment carefully, wash equipment after use and report any accidents. The document also lists common laboratory apparatus like Bunsen burners, tripod stands, beakers and their functions. It emphasizes the importance of following safety procedures when working with hazardous substances.

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