7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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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
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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
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Laboratory safety rules
• We need to work safely
in the laboratory.
• ccidents can happen if
we are careless.
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7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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!eep the laboratory clean and tidy
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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Wash all apparatus
after use.
Report any injured
or breakage to your
teacherimmediately.
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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o "nter the laboratory without your teacher#s
permission.
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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$rink "at
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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%aste chemical &lay
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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%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
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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
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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
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Flammable "(ample : ethanol, petrol and
kerosene
Flammable
•Burns easily
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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
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Irritant"(ample : ammonia and chloroform
Irritant
•)auses discomfort to the body
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Radioactive
•*ives out radiation + sinaran
"(ample : plutonium and uranium
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Eplosive
"(ample : sodium and potassium
Eplosive
•"(plodes easily
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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-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
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-aboratory apparatus
Beaker
%o contain chemicals
and for carrying outreactions.
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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-aboratory apparatus
Conical flask
%o contain chemicals
and for carrying our
reactions.
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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Retort stand
-aboratory apparatus
%o hold or clamp
apparatus
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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-aboratory apparatus
!easuring cylinder
%o measure the volume of
liuids
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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-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
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-aboratory apparatus
"urette
%o measure a small volume of
liuid accurately
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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-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
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-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
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-aboratory apparatus
#est tube holder
%o hold a test tube
while heating
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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-aboratory apparatus
"unsen
burner
/sed to heat
things
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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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
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-uminous flame
5on4luminous flameBack
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7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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-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
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5e(t
7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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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
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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
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. 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
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+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
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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
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>. 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
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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
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7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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7/23/2019 Form 1 Science Chapter 1.2 & 1.3
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• 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
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• %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
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Step 1 @ )ollecting data
Step ? @ nalysing and interpreting the data
Step C @ aking a conclusion
Step D @ Writing a report
)onduct
e(periment
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