| MCQ | Answer | Area of Chemistry/ Comment |
| 1. | B | [Atomic Structure] |
| 2. | C | [Atomic Structure] |
| 3. | B | [Electron Arrangement/ Groups in Periodic Table] |
| 4. | C | [Chemical Reactions] |
| 5. | A | [Atomic Structure] |
| 6. | D | [Atomic Structure] |
| 7. | A | [Nuclide Notation] |
| 8. | D | [Groups in Periodic Table] |
| 9. |  Any suitable diagram/ neutrons & protons in nucleus, electrons in shells surrounding nucleus |
| [Atomic Structure] | |
| 10. |  |
| [Atomic Structure/ Nuclide Notation] | |
| a) | As atomic number increases, melting point decreases |
| [Problem Solving – Data Interpretation] | |
| b) | They each have a single outer electron. |
| [Problem Solving – Groups in Periodic Table] | |
| c) | Alkali metals |
| [Groups in Periodic Table] |
| 11. | |
| a) | |
| (i) 2,8,1 – Sodium (Na) | |
| (ii) 2,8,8 – Argon (Ar) | |
| (iii) 2,4 – Carbon (C) | |
| (iv) 2,8,7 – Chlorine (Cl) | |
| [Electron Arrangement] | |
| b) | |
| (i) the alkali metals – Sodium (Na) | |
| (ii) the halogens – Chlorine (Cl) | |
| (iii) the noble gases – Argon (Ar) | |
| [Groups in Periodic Table] |
| 12. |  |
| [Chemical Formulae] | |
| 13. | A, E |
| [Naming Compounds] |
