::STAGE 1::
CLASS: ______________
DATE: ___________
GROUP: _______
Instructions:
1. Experiment will be conducted in groups. Everyone in each group must participate in
the given activity. As an ancient Chinese proverbs state:
“I hear and I forget, I see and I remember, I do and I understand”
2. Everyone must inculcate scientific attitudes and nobles value in conducting
scientific investigation.
3. Handling apparatus and materials safely.
4. All the observations and the results recorded in the table in a worksheet.
Apparatus:
Test tubes, dropper, test tube rack, batteries, bulb, connecting wires with
crocodile clips, carbon electrodes with holders, 100 cm3 beaker, glass rod,
stopper with delivery tube, spatula, rubber stopper, boiling tube, test tube
holder, measuring cylinder
Materials
Solution X
Cyclohexene
Unknown solution, distilled water, organic solvent, blue litmus paper, pH litmus
paper,
pH
test
paper
strip,
universal
indicator,
methyl
orange,
and
phenolphthalein, magnesium ribbon, copper(II) oxide, calcium carbonate, wooden
splinter, lime water
Prepared by: CIK NUR HARLYANA BINTI HARUN
SMK ABDUL RAHMAN TALIB, KUANTAN
::STAGE 1::
EXPERIMENT 1: “WHO AM I?”
Procedure:
1. Two test tubes are labelled and placed in a test tube rack.
Solution X
2. About 1 cm3 of unknown solution is placed into each of two test tubes.
3. About 2 cm3 of distilled water is added to test tube I and the mixture is
shaken.
Cyclohexene
4. About 2 cm3 of organic solvent is added to test tube II and the mixture is
shaken.
5. A piece of dry blue litmus paper is dropped into each of two test tubes.
6. Any changes that occur are observed and recorded in the table.
7. Steps 1 to 6 are repeated using pH litmus paper, pH test paper strip,
universal indicator, methyl orange and phenolphthalein.
“WHAT CAN I DO?”
EXPERIMENT 2:
Procedure:
Solution X
1. A beaker is filled with unknown solution until it is one-third full.
Cyclohexene
2. About 25 cm3 of organic solvent is added to the beaker and the mixture is
stirred.
3. Carbon electrodes are connected to the bulb,
negative and positive terminal of the battery
through
connecting
wires.
Then,
the
carbon
electrodes are dipped in the mixture as shown in
the diagram.
4. Observation is recorded in the table.
Cyclohexene
5. Steps 1 to 4 are repeated by replacing organic solvent with distilled water.
Prepared by: CIK NUR HARLYANA BINTI HARUN
SMK ABDUL RAHMAN TALIB, KUANTAN
::STAGE 1::
***Each group only needs to run ONE of three experiments. Please tick (/) the
experiment that will be conducted in an empty box provided.
EXPERIMENT 3(a):
Solution X
1. About 5 cm3 of unknown solution is placed in a test tube.
Cyclohexene
2. About 2 cm3 of organic solvent is added to the test tube and the mixture is
shaken.
3. Magnesium ribbon is cleaned by sand paper and then is dropped into the test
tube.
4. The test tube is closed to collect the gas liberated. The gas is tested with a
lighted wooden splinter.
5. Observation is recorded in the table.
6. Steps 1 to 5 are repeated by replacing organic solvent with distilled water.
EXPERIMENT 3(b):
Solution X
1. About 5 cm3 of unknown solution is placed in a test tube.
Cyclohexene
2. About 2 cm3 of organic solvent is added to the test tube and the mixture is
shaken.
3. One spatulaful of copper(II) oxide powder is added into the test tube and
the mixture is shaken.
4. Observation is recorded in the table.
5. Steps 1 to 4 are repeated by replacing organic solvent with distilled water.
EXPERIMENT 3(c):
Solution X
1. About 5 cm3 of unknown solution is placed in a test tube.
Cyclohexene
2. About 2 cm3 of organic solvent is added to the test tube and the mixture is
shaken.
3. One spatulaful of calcium carbonate is added to the acid powder is added
into the test tube.
4. The test tube is closed with a stopper fitted with a delivery tube dipping
into lime water. Any change to the lime water is noted.
5. Steps 1 to 4 are repeated by replacing organic solvent with distilled water.
~END OF EXPERIMENT~
Prepared by: CIK NUR HARLYANA BINTI HARUN
SMK ABDUL RAHMAN TALIB, KUANTAN
::STAGE 1::
Data & Observation
EXPERIMENT 1:
Solution X
Blue litmus
paper
pH test
paper strip
pH limus
paper
Universal
indicator
Methyl
orange
phenolphthalein
In distilled
water
In organic
solvent
Cyclohexene
Place the litmus & pH paper in the space provided.
Solution X in distilled Solution X in distilled Solution X in distilled
water:
water:
water:
Solution X in organic Solution X in organic Solution X in organic
solvent: Cyclohexene
solvent: Cyclohexene
solvent: Cyclohexene
Prepared by: CIK NUR HARLYANA BINTI HARUN
SMK ABDUL RAHMAN TALIB, KUANTAN
::STAGE 1::
EXPERIMENT 2:
Solution X
Observation
In distilled
water
In organic
solvent
Cyclohexene
Draw the change occur.
Solution X in distilled water:
Solution X in organic solvent:
Cyclohexene
Prepared by: CIK NUR HARLYANA BINTI HARUN
SMK ABDUL RAHMAN TALIB, KUANTAN
::STAGE 1::
EXPERIMENT 3(a) / EXPERIMENT 3(b)/ EXPERIMENT 3(c)
Solution X
Observation
In distilled
water
In organic
solvent
Draw the change occur.
Solution X in distilled water:
Prepared by: CIK NUR HARLYANA BINTI HARUN
SMK ABDUL RAHMAN TALIB, KUANTAN
Solution X in organic solvent: