QQuestion
Match the Column A with Column B: [5]
| Column A | Column B |
|---|---|
| (a) Sodium chloride | 1. has two shared pair of electrons |
| (b) Methane | 2. has high melting and boiling points |
| (c) Hydrogen chloride gas | 3. a greenhouse gas |
| (d) Oxidation reaction | 4. has low melting and boiling points |
| (e) Water | 5. Zn − 2e− ⟶ Zn2+ |
| 6. S + 2e− ⟶ S2− |
✓Answer
(a)–2: Sodium chloride — has high melting and boiling points.
(b)–3: Methane — a greenhouse gas.
(c)–4: Hydrogen chloride gas — has low melting and boiling points.
(d)–5: Oxidation reaction — Zn − 2e− → Zn2+.
(e)–1: Water — has two shared pairs of electrons.
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