Chemistry 0620/62 Oct Nov 2024 | Cambridge IGCSE Past Papers With Mark Scheme

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1. Electrolysis of Mercury(II) Bromide | Identification of process, role of electrodes, material properties of platinum, product collection points.

2. Reaction Rate Investigation | Effect of sodium thiosulfate concentration on reaction rate, experimental setup, graphical representation of results.

3. Qualitative Analysis of Ions | Flame test for potassium, precipitation reactions for chloride, sulfate, and transition metal ions, identification of ammonium ions.

4. Gas Testing & Observations | Identification of evolved gases using limewater, litmus paper, and splint tests, distinguishing between CO₂, H₂, and NH₃.

5. Determining Citric Acid Concentration | Experimental procedure using titration with sodium hydroxide, comparison of lime and lemon juice acidity.

6. Instrument Accuracy & Reliability | Selection of measuring tools (burette, measuring cylinder, pipette), improvement of experimental reliability.

CIE IGCSE Chemistry (0620) Nov 2024

Laura Bellini

Classification: Paper 6

Page count: 16

Viewed: 101

Last update: 2 months ago

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Chemistry 0620/62 Oct Nov 2024 | Cambridge IGCSE Past Papers With Mark Scheme

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