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Pertanyaan 1
Pilihan ganda
Which process allows the smell of ammonia to spread across a room?
- Brownian motion
- Diffusion
- Dissolving
- Distillation
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Berurutan
SMA 11
Kimia
[IGCSE] Chemistry 3
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Pertanyaan 2
Pilihan ganda
A student is investigating a colored mixture using chromatography. Where should the student place the colourd mixture?
- In the solvent
- Just above the pencil line
- Just below the pencil line
- On the pencil line
Pertanyaan 3
Pilihan ganda
Which process for purifying the muddy water is shown?
- Crystallisation
- Distillation
- Filtration
- Solvent extraction
Pertanyaan 4
Pilihan ganda
The aluminium ion (Al3+) has the same electronic structure as which noble gas?
- Argon
- Helium
- Krypton
- Neon
Pertanyaan 5
Pilihan ganda
A covalent molecule M contains a total of four shared electrons. What is M?
- Ammonia, NH3
- Hydrogen chloride, HCl
- Methane, CH4
- Water, H2O
Pertanyaan 6
Pilihan ganda
What are X, Y, and Z?
- A
- B
- C
- D
Pertanyaan 7
Pilihan ganda
Caffeine is a stimulant found in coffee. Which formula represent caffeine?
- C7H10N4O2
- C8H10N3O2
- C8H10N4O2
- C8H11N4O2
Pertanyaan 8
Pilihan ganda
What type of reaction occurs when ammonium chloride is added to water, causing the temperature to drop?
- Endothermic
- Exothermic
- Freezing
- Neutralisation
Pertanyaan 9
Pilihan ganda
For which reaction would this be an appropriate diagram?
- None of them
- 1 and 2 only
- 2 and 3 only
- all of them
Pertanyaan 10
Pilihan ganda
The diagram shows the apparatus used to measure the rate of a chemical reaction. For which reaction can the rate be measured using this apparatus?
- 2Na + Cl 2 → 2NaCl
- NaOH + HCl → NaCl + H2 O
- Na2 O + 2HCl → 2NaCl + H2 O
- Na2 CO3 + 2HCl → 2NaCl + H2 O + CO2
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