Safety rules in the laboratory:

                                  INTRODUCTION TO SCIENCE

1.4 Safety rules in the laboratory:

Science experiments are performed in the laboratories.Performing experiments are also verry intersting and enjoyable buty some times if you are not careful then it can be dangerous for yourself and others nearby.For the  sake of safety measures we have certain rules to follow.

General safety rules:

• Do not enter in the laboratory without instructor's or teacher's permission.
• Open all windows and doors or as guided by the teacher.
• Do not carry out any experiment with out permission of teacher.
• Read and understand well before starting any experiment .if you are not clear then ask teacher to explain.
• It is very necessory to handle and use appratus carefully.
• Always check label before using the container.
• To avoid contamination ,do not pour any unused chemical back into container.
• Do not taste any chemical.
• Do not eat ,drink or play in a laboratory.
• Do not tamper with electrical mains and other fittings in the laboratory.
• Work tidily and neatness is essenssial.wash all appratus after use.
• Return the appratus to its proper place after use.
• Wash your hands after laboratory work

Safety rules when heating or mixing chemicals:

• Wear goggles when mixing or heating chemicals.
• Put flameable substances away from naked flame.
• When you are heating chemicals in a test tube,point the open end of test tube  away from your self.

 When Accidents occur:

• Report all breakage ,injuries,accidents and spillage to your teacher immediately.
• If a chemical accidently enters in your mouth ,spit it in to basin and rinse your mouth .similarly if any chemical comes in contact with your body part wash with plenty of water and tell your teacher.

Every chemical has labelling which tells us about the hazardous nature of chemical so you should follow the instructions

Flammable substances e.g petrol,alcohal.(put flammable substances away from fire or heat). 

Explosive substances e.g mixture of hydrogen and air(These substances explode when heated or lit ).

Corrosive substances e.g strong acids and alkalis.(avoid contact with skin because these chemicals have corrosive action they can cause burns)

Poisonous substances e.g mercury,cyanide,chlorine.(do not eat ,drink or taste them)

Irritating substances e.g chloroform,alcohal,bromine water.(avoid inhaling use them in fume chamber)

Radioactive substances e.g carbon ,uranium(use strictly safety measures while dealing with them)

Biohazardous materials e.g blood and blood products infectious bacteria and viruses.(avoid their contact )   

TRY IT OUT

Science laboratories can be found in different places.The space can be a laboratory where astronauts carry out investigations .What else or where else can you use as a laboratory?Is the study of science limited to laboratory?Give an example to support your answer?