Page 55 - Spotlight A+ Form 4 & 5 Chemistry KSSM

Experiment Observation Inference
(a) Place the lighted wooden
splinter near the mouth of
the test tube.
(b) Bubble the gas released
into the limewater.
Table 2
[**Complete Table 2 with reference to the Simulation experiments and sample results given]
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5 Based on the experiments conducted, name the anions found in D1.

Part B Carry out the experiment according to the following instructions:
1 Put a spatula of D2 powder into a 50 cm beaker.
3
2 Add distilled water until half full.
3 Stir until all D2 powder dissolves.
4 Pour 2 cm of the prepared solution into three test tubes, I, II and III.
3
5 Carry out the experiments in Table 3 on the solution in the test tube.
6 Write the observations and inferences in Table 3.

Experiment Observation Inference
(a) Test tube I - Add sodium hydroxide solution
drop by drop until in excess.

(b) Test tube II - Add ammonia solution drop by
drop until in excess. SPM MODEL PAPER
(c) Test tube III - Add 2 cm of sodium sulphate
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solution.
Table 3
[**Complete Table 3 with reference to the Simulation experiments and sample result given]
7 Based on the experiments conducted, name the cations found in D2.

Note: Simulation experiments and sample results of Question 1

(a) L1 + L2 (Silver nitrate solution, AgNO + sodium chloride solution, NaCl)
3
Thermometer

40 40
30 30
3
25 cm of
20 solution L1 20
Solution L2
Polystyrene cup
White precipitate
(b) L1 + L3 (Silver nitrate solution, AgNO + potassium chloride solution, KCl)
3
Thermometer
40 40
30 30
3
25 cm of
20 solution L1 20
Solution L3
Polystyrene cup
White precipitate
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