Theme 1: Scientific Method Chapter 1: Introduction to Scientific Investigation Achievement level 1 1 Name the laboratory apparatus apparatus below below based on the answers given. given.
Beaker
Conical flask
Filter funnel
Test tube
easuring cylinder
!" marks# $
atch the physical %uantity with its unit. Physical quantity
SI unit
&lectric current
•
•
'ength
•
•
ass
•
•
Time
•
•
Temperature
•
•
eter
(econd )elvin
)ilogram
Ampere
!" marks#
* lab.
Tick +
, or +
, for the purposes of the symbols that are harmful in science
(ymbol
Correct +
, or -ncorrect +
eaning
,
&plosive
Flammable
Corrosive
!* marks# /
The density for three types of li%uid are given as follow0 2etrol
3.4 g cm*
5lycerine
1.$ g cm*
6ater
1.3 g cm*
7aniel pours all three li%uid into a beaker. 'abel each of li%uid based on layers.
!* marks#
Achievement level 3
$ "
6e should obey all rules and regulations di laboratory. Accident in laboratory can be avoided if the precautions always being taken all the time. Thick + , for the correct statement or + , for the false statement.
+a, 8se as much as possible chemicals in laboratory. + +b, -nform the teacher at the end of lesson if you are in9ured. + +c, 6ash your hand clean as you completed your eperimental work.+
, , ,
!* mark# :
7iagram shows four different Celsius thermometers. Body temperature for an unhealthy person is in the range of *: oC and /$oC. 6hich thermometer is the most suitable to measure body temperature;
A
45
37
60
100
30
0
20
0
B
C
7 !1 mark#
Achievement level *
4
4
Amin saw his father ordered three layers iced tea at a stall.
/ milk layer / brown sugar
&plain why does the brown sugar layer positioned at the lowest layer; ================================= ================================= !$ marks# Achievement level /
>
A
@
B
Both of apparatus above are used to determine the volume of li%uid. -n your opinion? which is the suitable apparatus to be used to measure *"." cm* li%uid accurately; &plain your answer. ================================== ================================== !$ marks# +a, Assuming that the 9aws of the vernier calipers are tightly closed? find the ero error of the vernier calipers below.
5
+i,
+ii,
+iii,
+iv,
+v,
!" marks#
+b, The top image depicts the vernier caliper with its 9aws tightly closed while the bottom image depicts the vernier caliper with its 9aws closed on an ob9ect. Find the ero error and the correct reading of the vernier calipers 6
below. +i, ero error0
Deading shown0
Corrected reading0 +ii, ero error0
Deading shown0
Corrected reading0 +iii, ero error0
Deading shown0
Corrected reading0
13
!@ marks# +a, Find the ero error and the correct reading of the micrometer screw gauge below.
7
+i,
ero error0
Deading shown0
Corrected reading0
+ii ,
ero error0
Deading shown0
Corrected reading0
!: marks#
+b, (ate the reading of micrometer screw gauge in the figure below.
8
!: marks# &nd of %uestion paper. 5ood luckE ,
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