ADSS Prelim P3 Material Prep

ADMIRATLY SECONDARY SCHOOL PRELIMINARY PRACTICAL EXAM 2024 PURE CHEMISTRY PREPARATORY INSTRUCTIONS FOR LABORATORY STAFF CONFIDENTIAL Great care should be taken that any confidential information given does not reach candidates either directly or indirectly. Subject/Code/Paper: Chemistry 6092/3 Total number of candidates for this paper is 34 (Lyra 6) & 16 (Lyra 7) = 60. Please prepare at least 65 sets. Shift 1: 20 students (Computer Lab 2) Shift 2: 20 students (Computer Lab 2) Shift 3: 20 students (Computer Lab 2) Please complete parts A and B where applicable. A) Apparatus / Materials: Items to be supplied by the Centre (per set per candidate unless otherwise specified) S/No Items (Apparatus / Material) Quantity Remarks 1 Solution P (0.5 mol/dm3 sulfuric acid) 1 bottle (capacity 250 cm3) Labelled as P 2 Solution Q (1.2 mol/dm3 sodium hydroxide) 1 bottle (capacity 250 cm3) Labelled as Q 3 Solid C Copper(II) carbonate 1 small vial (capacity 20 cm3) Labelled as C 4 Solution X (calcium nitrate) 1 small vial (capacity 20 cm3) Labelled as X 5 Solution Y (sodium carbonate) 1 small vial Labelled as Y

2 S/No Items (Apparatus / Material) Quantity Remarks (capacity 20 cm3) 6 Aqueous sodium hydroxide 1 bottle Bench reagent 7 Aqueous ammonia 1 bottle Bench reagent 8 Barium Nitrate 1 bottle 9 Silver nitrate 1 bottle 10 Hydrochloric Acid (1mol/dm3) 1 bottle Bench reagent 11 Nitric Acid (1mol/dm3) 1 bottle Bench reagent 12 Sulfuric Acid (1mol/dm3) 1 bottle Bench reagent 13 Limewater 1 bottle Bench reagent 14 Aluminium foil 3 15 distilled water 1 16 Burette (50cm3) 1 17 Burette stand and clamp 1 18 Pipette (25cm3) 1 19 Pipette filler 1 20 White tiles 1 21 Filter Funnel 1 22 Filter paper 2 23 Delivery tube (that fits test-tube) 1 24 Delivery tube (that fits boiling test-tube) 1 25 Wooden splints 2 26 Red and blue litmus paper 2 each 27 Bunsen burner 1 28 Lighter 1 29 Goggles 1 30 Plastic dropper 6 31 Glass rod 1 32 Boiling tube 1 33 Test tubes 6 34 Test-tube rack 1 35 Test-tube holder 1 36 Test-tube brush 1 37 Kitchen paper towels 2 Have extra roll on teacher’s table 38 Measuring cylinder (25ml) 1

3 S/No Items (Apparatus / Material) Quantity Remarks 39 Measuring cylinder (50ml) 1 40 Thermometer 1 41 Styrofoam cup 1 42 Beaker (250ml) 1 43 Marker pen 1 44 Electronic balance 1 4 students to share one if there are insufficient B) Additional Instructions to Laboratory Staff / Subject Supervisor / Invigilator 1. All standard reagents not mentioned above would be available to candidates at students bench. 2. Additional samples labelled P, Q, C, X and Y should be available on teachers’ bench. Cloths or tissues should be available in case of spillages. 3. Additional apparatus and materials on stand-by should be available at the teacher’s bench.