form 1 science chapter 1.2 & 1.3

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 1/50

1.2 Your Science Laboratory

Learning outcomes

By the end of this lesson, you should be

able to:

•work safely in the laboratory

•use some common scientific apparatus

in the laboratory

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 2/50

Scientists usually work in alaboratory.

You will also work in laboratorywhen you carry out scientific

investigations during your science

lessons.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 3/50

Laboratory safety rules

• We need to work safely

in the laboratory.

•  ccidents can happen if

we are careless.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 4/50

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 5/50

!eep the laboratory clean and tidy

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 6/50

Wash all apparatus

after use.

Report any injured

or breakage to your

teacherimmediately.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 7/50

o "nter the laboratory without your teacher#s

permission.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 8/50

$rink "at

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 9/50

%aste chemical &lay

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 10/50

%here are many substances in the

science laboratory. Some of these

substances are ha'ardous.

We use ha'ard warning symbols to

show the danger of the substances.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 11/50

Below are some common ha'ard warning

symbols.

Poisonous Flammable Corrosive

Irritant Eplosive

Flammable

Irritant

Flammable

Irritant

Flammable

Irritant

Flammable Corrosive

Irritant

Flammable CorrosiveCorrosiveFlammable CorrosiveFlammable Corrosive

Irritant

Flammable Corrosive

Irritant

Flammable Corrosive

Irritant

Flammable

Radioactive

Poisonous

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 12/50

Poisonous

"(ample : mercury, bromine and

sodium cyanidePoisonous

• )auses death or harm if

absorbed through the skin,

swallowed or inhaled.

Poisonous

• )auses death or harm if

absorbed through the skin,

swallowed or inhaled.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 13/50

Flammable "(ample : ethanol, petrol and

kerosene

Flammable

•Burns easily

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 14/50

Corrosive "(ample : concentrated sulphuric

acid and concentrated sodium

hydro(ide

Corrosive

• )auses damages to skin andeyes upon contact.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 15/50

Irritant"(ample : ammonia and chloroform

Irritant

•)auses discomfort to the body

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 16/50

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 17/50

Radioactive

•*ives out radiation + sinaran

"(ample : plutonium and uranium

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 18/50

Eplosive

"(ample : sodium and potassium

Eplosive

•"(plodes easily

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 19/50

-aboratory apparatus

%est tube

%o contain small

amount of chemicals

and for carrying outreaction

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 20/50

-aboratory apparatus

Beaker 

%o contain chemicals

and for carrying outreactions.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 21/50

-aboratory apparatus

Conical flask

%o contain chemicals

and for carrying our

reactions.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 22/50

Retort stand

-aboratory apparatus

%o hold or clamp

apparatus

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 23/50

-aboratory apparatus

!easuring cylinder 

%o measure the volume of

liuids

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 24/50

-aboratory apparatus

Filter funnel

/sed together

with a folded filter

paper to separate

solids from liuid

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 25/50

-aboratory apparatus

"urette

%o measure a small volume of

liuid accurately

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 26/50

-aboratory apparatus

Pipette

%o measure a fi(ed volume of a

liuid

0 ml, 1 ml, 02 ml, 01 ml and 31 ml

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 27/50

-aboratory apparatus

#est tube rack

%o place test tubes

while we are notusing them

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 28/50

-aboratory apparatus

#est tube holder 

%o hold a test tube

while heating

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 29/50

-aboratory apparatus

"unsen

burner 

/sed to heat

things

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 30/50

Bunsen burner labeled diagram

)ollar base

air4hole

chimney

or barrel

rubber tubing

heatproof

mat

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 31/50

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 32/50

-uminous flame

5on4luminous flameBack

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 33/50

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 34/50

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 35/50

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 36/50

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 37/50

-uminous flame

 + yellow flame

5on4luminous flame

+ blue flame

*et yellow flame whenthe air4hole is closed

*et blue flame when theair4hole is open

6lame is easy to see

because it is luminous

6lame is difficult to see

because it is non4luminous

*ives out a lot of soot $o not give out soot

6lame is not so hot 6lame is very hot

5ot suitable for heating Suitable for heating

Back

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 38/50

5e(t

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 39/50

0. Say whether the following statements are true or

false.

+aYou may eat and drink in the laboratory77

+bYou may enter the laboratory without your

teacher#s permission7777777777.

+cYou may taste some o f the chemicals in the

laboratory777777777777777

+dYou must report any in8ured or accident to your

teacher immediately7777777777.

6alse

6alse

6alse

%rue

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 40/50

3. 6ill in the blanks with suitable words.

+a Scientists usually work in a 9999999999999.

+b You must follow the laboratory 99999999999999

rules when working in the laboratory.

+c We use 999999999999999999999999999 to show

the danger of ha'ardous substances.

+d )oncentrated sulphuric acid is an e(ample of a 9999999999999999999substance.

laboratory

safety

ha'ard warning symbols

corrosive

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 41/50

. 5ame the apparatus used for each of the

following purposes :

+a%o hold a hot test tube777777+b%o place test tubes while we are not using

them77777777777777

+c%o heat things777777777.. Bunsen burner 

test tube holder 

test tube rack

+d % l f li id

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 42/50

+d %o measure volume of liuids777.

+e %o measure a small volume of liuid

accurately777777777777..

+f %o measure a fi(ed volume of liuid......

+g %o hold or clamp apparatus7777...

+h %o contain chemicals and for carrying outreactions7777777777777

measuring

cylinder 

burette

pipette

retort

stand

beaker and

conical flask

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 43/50

0. ;ow do we get a yellow flame<

)lose the air4hole in Bunsen burner.

3. ;ow do we get a blue flame<

=pen the air4hole in Bunsen burner.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 44/50

>. Which flame gives out a lot of soot<

Yellow flame + luminous flame .

. Which flame is hotter<

Blue flame +non4luminous flame .

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 45/50

1. Which flame is suitable for heating<

Blue flame + non4luminous flame .

?. Which flame is easier to be seen<

Yellow flame + luminous flame .

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 46/50

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 47/50

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 48/50

• Scientists use scientific method when

carrying out scientific investigations.

• Scientists follow the steps in the scientific

method to make sure that what they do issystematic  and their observations are

reliable.

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 49/50

• %he steps in a scientific investigation are e(plained

below :

Step 0 @ Adentifying the problem

Step 3 @ aking a hypothesis + smart guess

Step @ &lanning the e(periment

Step > @ )ontrolling the variables

7/23/2019 Form 1 Science Chapter 1.2 & 1.3

http://slidepdf.com/reader/full/form-1-science-chapter-12-13 50/50

Step 1 @ )ollecting data

Step ? @ nalysing and interpreting the data

Step C @ aking a conclusion

Step D @ Writing a report

)onduct

e(periment