1
Introducing Science
Laboratory apparatus
1.4
efer to Textbook
p.37–41
A. True or false (3 marks)
-
Write ‘T’ for a true statement and ‘F’ for a false statement.
Sectional EExercise
xercise
1.
A spatula is used to transfer a small amount of solid.
T
2.
All laboratory apparatus is made of glass.
F
3.
When drawing a vertical section diagram, we should shade the diagram to represent
the parts that are darker in colour. (Vertical section diagrams should not be shaded.)
B. Multiple-choice (3 marks)
F
Choose the correct answer for each question.
1.
Integrated Exercise
2.
Which of the following apparatus should be used to stir a hot liquid?
A.
Glass rod
B.
Spatula
C.
Dropper
D.
Thermometer
Which of the following apparatus should be used to measure out 15 cm3 of liquid?
A.
B.
C.
D.
100
100
200
Spelling Corner
I
A
50
80
100
60
40
D
3.
Which of the following is the vertical section diagram of a conical flask?
A.
B.
C.
D.
A
D
12
Introducing Science
1
C. Questions (29 marks)
The diagram below shows some laboratory apparatus and safety equipment.
T
U
L
F
M
Sectional EExercise
xercise
B
G
C
H
N
I
O
J
D
E
K
P
Q
(a)
(b)
S
R
Name each laboratory apparatus and equipment.
(21 marks)
ente
A measuring cylinder (1m)
B
funnel (1m)
C
conical flask (1m)
D
dropper (1m)
E
glass rod (1m)
F
reagent bottle (1m)
G
beaker (1m)
H
wire gauze (1m)
I
tripod (1m)
J
Bunsen burner (1m)
K
heat-proof mat (1m)
L
test tube (1m)
M
test tube rack (1m)
N
tongs (1m)
O
test tube holder (1m)
P
watch glass (1m)
Q
evaporating dish (1m)
R
gas jar (1m)
S
safety goggles (1m)
T
first-aid box (1m)
U
fire extinguisher (1m)
The table below lists the uses of some of the above apparatus and equipment. Complete
the table with suitable letters. The first one has been done for you as an example.
(4 marks)
Use
To transfer a small amount of liquid
Apparatus/Equipment
D
To hold hot objects
.
To hold a test tube when heating
O (1m)
.
⑤.
To protect your eyes
S (1m)
.
To heat substances
Integrated Exercise
A
Spelling Corner
1.
J (1m)
N (1m)
13
1
Introducing Science
(c)
Draw the vertical section diagram of each apparatus below.
(4 marks)
Apparatus
Sectional EExercise
xercise
*i
Vertical section
diagram
Integrated Exercise
(1m each)
Total Score :
Using measuring instruments
1.5
/ 35
efer to Textbook
p.42–59
Spelling Corner
A. Fill in the blanks (6 marks)
1.
measuring cylinder
We use a (a)
to measure the volume of a liquid. To
take an accurate reading, our eyes should be at the same level as the bottom of the
(b)
.
meniscus
e
2.
In the laboratory, we usually use a
3.
We can use a
(a)
balance
to measure the mass of an object.
to measure temperature. We can also measure
thermometer
-
temperature with a temperature sensor connected to a (b)
Temperature is usually measured in (c)
14
degrees Celsius
data-logger
(°C).
Introducing Science
1
B. Multiple-choice (7 marks)
Choose the correct answer for each question.
3.
14.3 cm
B.
14.4 cm
C.
14.6 cm
D.
14.7 cm
cm3
B.
L
C.
mg
D.
mL
y
C
Which of the following units is NOT a unit of volume?
A.
C
The volume of the drink carton package shown on the right is
6.5 cm
4 cm
250 cm . The height of the carton package is about
3
4.
A.
10.6 cm.
B.
9.6 cm.
C.
80 mm.
D.
100 mm.
height
⑧
B
Which of the following is an advantage of using an electronic
balance?
A.
It gives precise measurements.
B.
It is less expensive.
C.
It can measure heavier objects.
D.
It is a more advanced instrument.
Sectional EExercise
xercise
A.
Integrated Exercise
2.
What is the length of the pen below?
Spelling Corner
1.
D
A
15
1
Introducing Science
5.
6.
The apparatus shown in the photo is a
A.
lever balance.
B.
triple beam balance.
C.
top pan balance.
D.
spring balance.
8
B
Which of the following diagrams shows the correct way to measure the temperature of the
Sectional EExercise
xercise
liquid with a thermometer?
A.
B.
C.
D.
Integrated Exercise
8
C
7.
Temperature can be measured in degrees Celsius (°C) or in degrees Fahrenheit (°F). The photo
below shows a thermometer with both scales.
Spelling Corner
When the temperature is 0 °C, the temperature in degrees Fahrenheit will be
A.
–18 °F.
B.
25 °F.
C.
32 °F.
D.
80 °F.
Fahrenheit 華氏
16
g
C
Introducing Science
1
C. Questions (14 marks)
1.
(a)
Draw a meniscus to represent the given
volume.
(b)
(1 mark)
Draw a liquid column to represent
the given temperature.
(1 mark)
thermometer
measuring cylinder
60
Temperature = 38 °C
20
Correct meniscus (1m)
Correct liquid column (1m)
Volume = 27 cm3
A student measures the volume of a stone using the method shown below.
stone
Integrated Exercise
2.
displacement can
water
cm3
20
cm3
20
lower the stone into the
displacement can
10
(a)
10
What is the volume of the stone?
(1 mark)
nee
16 cm3 – 7 cm3 = 9 cm3 (1m)
(b)
When taking the reading, the student should place the measuring cylinder on the bench,
instead of holding it in his/her hands. Briefly explain why.
The student can take a more (i)
Sectional EExercise
xercise
30
(3 marks)
Spelling Corner
70
-
cylinder on the bench or any other (ii)
him/her to read the bottom of the (iii)
accurate (1m)
reading by placing the measuring
flat (1m)
surface, because it is easier for
meniscus (1m)
.
17
1
Introducing Science
3.
Leo uses the instrument shown on the right to measure
the net mass (i.e. the mass without the container) of a
bottle of soft drink.
(a)
Name the instrument.
(1 mark)
Electronic balance (1m)
(b)
Describe how he can measure the net mass of the bottle of soft drink.
(3 marks)
Sectional EExercise
xercise
empty beaker (1m)
on the instrument and press the
--
Put an (i)
=>
En
(ii)
to set the reading to zero. Then, pour
‘re-zero’/tare button (1m)
(iii)
the soft drink from the bottle (1m)
into the beaker to
directly measure the mass of the soft drink.
4.
Amy tries to measure the time for one complete swing of a ball (i.e. swinging from P to Q,
and then back to P). She measures the time taken for 10 swings and then divides the time
taken by 10 in order to find the time for one single swing.
Integrated Exercise
string
Q
P
Spelling Corner
Time for 10 swings (s)
(a)
Trial 1
Trial 2
Trial 3
Trial 4
25.5
25.0
24.5
23.0
What instrument should Amy use to measure time?
(1 mark)
Stopwatch (1m)
(b)
Calculate the average time for one single swing of the ball.
(2 marks)
See
Average time for 10 swings = (25.5 + 25.0 + 24.5 + 23.0) / 4 = 24.5 s (1m)
Average time for 1 swing = 24.5 / 10 = 2.45 s (1m)
(c)
Why does Amy carry out several trials instead of one?
(1 mark)
This can reduce the errors in measurements. (1m)
-
Total Score :
18
/ 27