Properties of non-metals and their oxides, how the common gases (hydrogen, oxygen, carbon dioxide, ammonia, chlorine) are prepared and collected, their tests, and the uses of non-metals and their compounds.
5 narrated scenes. Press play, listen and read along — the points appear as they are explained. Use ‹ Prev / Next › or the scene bar to jump to any scene.
The air you breathe and the fertilisers on Caribbean farms all come from a handful of non-metal gases. Know how to make them, test them and use them safely.
Narration uses your device’s built-in voice. No sound? Switch to “Captions only” — the captions advance on their own.
Copy these into your notebook in your own words — that is how they stick.
Acidic (CO₂, SO₂, NO₂).
Zn + dil. acid; squeaky pop.
H₂O₂ + MnO₂; relights glowing splint.
Marble chips + dil. HCl; limewater milky.
NH₄Cl + Ca(OH)₂; dry with CaO; damp red litmus → blue.
MnO₂ + conc. HCl; bleaches damp litmus.
Upward delivery (less dense), downward (denser), over water (insoluble).
Carbon, sulfur, nitrogen, oxygen, chlorine, noble gases.
3 quick games on this lesson. Earn XP and badges as you play — your best score for each game is saved. Games are for practice and do not change your exam readiness. More games in the Chemistry Arcade.
8 items modelled on real CSEC Paper 1 questions. Choose one answer for each, then check. Aim for 80% or better. Work each item on paper first.
Write full answers, then reveal the mark scheme and tick the points you earned (15 marks in total). Show all your working — method marks count. Your answers are saved on this device.
Question 1 [15 marks]
Carbon dioxide and ammonia are prepared in the laboratory.
(a) (a) State the reagents used to prepare carbon dioxide and write the equation. [3]
(b) (b) State the method of collection of carbon dioxide and give a reason. [2]
(c) (c) Describe the test for carbon dioxide. [2]
(d) (d) Describe how ammonia is prepared and dried. [3]
(e) (e) Describe the test for ammonia and for chlorine. [3]
(f) (f) State two uses of ammonia and two of sulfur. [2]
Find these in your own past-paper booklets for extra timed practice. Items above are written in the style of these papers; any adapted from a specific question say so.