1.2 Laboratory Rules

8/3/2019 1.2 Laboratory Rules

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1.2 SCIENCELABORATORY



Laboratory Safety Rules And

Precautions´ You should only enter a science laboratory withyour teachers permission.

´ You must not bring food and drinks into the

science laboratory.´ You are not allowed to enter the preparation

rooms and stores.

´

You must not take out apparatus and chemicalsfrom the laboratory.

´ You should only use apparatus and chemicalswith the teachers permission.



´ All the apparatus and chemicals must only be

used for the purpose instructed by the teacher.´ Materials must be handled correctly, for example

bottles should not be carried by the neck.

´ You must not taste any chemicals unless your

teacher instructs you to do so.

´ You must always check the label on the bottle tomake sure that you are using the correct

chemicals.´ Should a chemical come into contact with your

skin or clothing, wash thoroughly with water.



´ Should a chemical accidently come into contact

with your mouth, you should spit it out and washyour mouth with plenty of water.

´ You must report all the accidents and injuries

such as cuts and burns to your teacher immediately.

´ You should not play in the laboratory.

´

You should not play with apparatus andchemicals.



LABORATORYAPPARATUS



´ Click on the 6 apparatus that you think can be found

in a science lab.



COMMON LABORATORY APPARATUS



BEAKER





L ABORATORY APPARATUS

APPARATUS USES

Bunsen burner -The Bunsen burner is mainly used for heating things.

-During a heating process, avoid from direct contact with

heated apparatus.

Beaker The following is a list of the uses of a beaker: -- A beaker is an apparatus used as a container for liquids.

- A beaker is used to transfer liquids to another apparatus.

-The beak-shaped mouth of a beaker helps to avoid spilling.

-A beaker is used as a simple measuring tool.

-A beaker is used as a container for small objects and

materials.-A beaker is used in heating experiments and activities.

-A beaker is made from glass. Be careful when handling it.

When using a beaker, avoid breaking and overheating a glass

beaker.



USING A BUNSEN BURNER ( page 10 )

Use a lighter or match to light up a

Bunsen burner. Remember to light up the

match before you turn on the gas.

Use a test tube holder when heating

solutions in a test tube. Do not point the

mouth of the test tube to yourself or your

friends.



USING A BUNSEN BURNER ( page 10)

Use a tripod stand and wire gauze when

heating chemicals in a beaker or crucible.

Do not heat flammable substances like

alcohol directly. Use a water bath instead.

Turn off the gas after using a Bunsen

burner.



USES OF BUNSEN BURNER



H AZARDS SYMBOL ( page 11)



EXERCISE: ( page 12 )

1)What apparatus will you use to:

a. Find the volume of liquid in a bottle:

b. Heat things in a science laboratory

c. Measure the temperature of boiling water

d. Measure the time taken for a pupil to run 400 meters

2)Explain why you cannot throw unwanted things into a sink

3)List three good practices in a science laboratory

4)List three bad practices in a science laboratory

5)Draw the apparatus in Figure 1 in outline. What are their uses?

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1.2 Laboratory Rules