Modul Hikmah 17-1

8/8/2019 Modul Hikmah 17-1

1/14

HIKMAH MODULE

161

SCIENCE SPM

MODULE 17

PAPER 2SECTION A + B

1. Figure 1 shows the set up of apparatus to study the effects of impurities on

boiling point of water.

Figure 1

a. State the variables in this experiment:

i. Manipulated variable:

ii. Responding variable:

..

b. State one inference based on the observation.

..

c. What is the operational definition for impurities based on the experiment.

Added with salt


2/14

HIKMAH MODULE

162

2. Figure 2 shows the apparatus to purify alcohol from a mixture of alcohol andwater.

Figure 2

a. Name the method of purification shown in Figure 2.

..

b. Label the flow of water in of Liebig condenser.

.

c. What is the function of porcelain chips in the experiment?

d. State the boiling point of alcohol.


3/14

HIKMAH MODULE

163

3. Figure 3.1 shows the apparatus of an experiment which carried out to study theelectrical conductivity of substance P.

Figure 3.1

Figure 3.2 shows the reading of the ammeter which substance P is in solid state andliquid state.

Figure 3.2

a. What is the hypothesis for this experiment


4/14

HIKMAH MODULE

164

b. State the variables :



iii. Constant :

c. Complete ammeter reading in the table below.

Electrical conductivity

Solid state Liquid stateSubstance P

d. What is the operational definition for an ionic substance?


5/14

HIKMAH MODULE

165

4. Figure 4 shows an experiment conducted to study heat changes in chemicalreactions.

Figure 4

The thermometer readings are recorded in the table below.

Substances Initial temperature ( 0C) Final temperature( 0C)

Ammonium chloridepowder

30 26

Sodium Hydroxide 30 37

a. State the variables in this experiment


..


..

b. What can you infer about the drop of the temperature?

..

c. Based on the results what is operational definition for the exothermic

reactions?

..

.


6/14

HIKMAH MODULE

166

5. Figure 5 shows an experiment conducted to study the reaction between zinc andhydrochloric acid.

Figure 5a. Name the gas X which is produced in this experiment.

..

b. How do you confirm the gas in (a)?

..


7/14

HIKMAH MODULE

167

c. Table below shows the result of the experiment

Time ( minute ) 0 1 2 3 4 5 6 7

Volume of gas(cm3)

0 3 15 24 28 32 34 34

Using data from the table draw a graph of the volume of gas collected againstthe time.


8/14

HIKMAH MODULE

168

d. What is the relationship between the volume of gas collected and thereaction time in the first 6 minutes?

6. Figure 6 shows the set up of the apparatus to study the hardness of pure copper

and brass.

Figure 6The results are recorded in the table below.

Diameter of dentType of metalblock 1 2 3 Average

Brass 2.8 2.9 2.7

Copper 3.8 4.0 4.2

a. Complete table above.

b. State the hypothesis that can be made from this experiment.


9/14

HIKMAH MODULE

169

c. State the variables:


ii. Constant variable:

iii. Responding variable:

..

d. Which metal is harder?

.

e. From the experiment what is alloy (operationally definition)?

..

..

7. Figure 7 shows an experiment to investigate the electrical conductivity of metaland non-metal.

Figure 7


10/14

HIKMAH MODULE

170

The results are recorded in the table below.

Material Observation

P Bulbs light up

Q Bulbs does not light up

a. State the variables;

i. manipulated variable:

ii. responding variable:

..

b. What is the hypothesis in this experiment?

.

..

c. Give one inference that can be made on P.

d. What is the operational definition for non-metal material?


11/14

HIKMAH MODULE

171

8. The Table 1 below shows the height of 30 student in class 5B

Table 1

a. Based on data table 1 complete Table 2

Height (cm) 145-149 150-154 155-159 160-164 165-169

Number of student

Table 2


12/14

HIKMAH MODULE

172

b. Based on the table 2 draw a bar chart.

c. From the graph, what type of variation is shown by the bar chart?

d. Give another example type of variation above (d).

e. Give one factor that can effect this type of variation


13/14

HIKMAH MODULE

173

MODULE 17 - ANSWERS

PAPER 2SECTION A1.a. i. the presence of salt. ii. boiling pointb. the boiling point increase because of the presence of salt/impuritiesc. The impurities is shown by the increase of boiling point.

2. a. distillationb.c. to break the air bubbles/to prevent the solution from boiling too vigorously in the flask.

d. 78 C

3.

a. Substance P conduct electricity in liquid state but not in solid state.b.i State of material

ii.Ammeter reading/the conductivity of electricityc. 0, 1.1ampd. Operational definition for ionic substance is shown by the conductivity of the electricityin liquid state but not in solid state.

4.a.i. type of substances ii. final temperature/temperature after reactionb. the temperature is drop because the heat is absorbedc. exothermic reaction is shown by the increase of the temperature

5.a. Hydrogenb. using burning wooden splinter pop sound will producec.d. directly proportional

6.a. 2.8, 4.0.b. alloy is harder than pure metalc. type of material /metal block ii. weight iii. Diameter of dent

d. brasse. alloy is shown by the small of dent.

7.

a.i. type of material ii. lightning of the bulbb. metal can conduct electricityc. P can conduct electricity because its metald. The operational definition for no- metal material is shown by the bulb does not lightup.


14/14

HIKMAH MODULE

174

8.a.

Height (cm) 145-149 150-154 155-159 160-164 165-169Number ofstudents

3 7 9 6 5

b.

c. continuous variation

d. weight

e. environment

Documents

Modul Hikmah 17-1