Page 56 - Spotlight A+ Form 4 & 5 Chemistry KSSM

Note: Simulation experiments and sample results of Question 2 (Part A)

No 'pop' sound
Lighted Lighted wooden
wooden splinter
splinter
Dilute sulphuric Dilute sulphuric
acid, H SO acid, H SO
2 4 2 4
D1 D1
Dilute sulphuric Dilute sulphuric
acid, H SO acid, H SO
2 4 2 4

Limewater Limewater
turns cloudy
D1 D1

Note: Simulation experiments and sample results of Question 2 (Part B)

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Add a little sodium hydroxide,
Add in excess sodium hydroxide,
Test tube 1
NaOH solution
NaOH solution

White Soluble white
precipitate precipitate

Add a little ammonia, Add in excess ammonia,
Test tube 2
NH solution NH solution
3 3

White Insoluble white
precipitate precipitate
Add sodium sulphate,
Test tube 3
NaSO solution
4

White
precipitate

540