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AQA A-level chemistry chemical tests 2025 Questions and Answers
AQA A-level chemistry chemical tests 2025 Questions and Answers
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AQA A level Chemistry
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AQA A level Chemistry
AQA A-level chemistry chemical tests 2025 Questions and Answers
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| Uploaded on: | September 14, 2025 |
| Last updated: | September 15, 2025 |
| Number of pages: | 4 |
| Written in: | 2025/2026 |
| Type: | Exam (elaborations) |
| Contains: | Questions & Answers |
| Tags: | AQA A-level chemistry chemical tests 2025 Questions and Answers |
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AQA A-level chemistry chemical tests 2025 Questions and Answers test for Carbon Dioxide (CO2 ) - --CORRECT ANSWER--turns limewater milky (sparingly soluble Ca(OH) 2 forms insoluble CaCO3 ) Chlorine (Cl2 ) test - --CORRECT ANSWER--bleaches damp litmus paper (Cl2 reacts with water to form HCl and HOCl) Hydrogen (H2 ) test - --CORRECT ANSWER--pops with a lighted splint Oxygen (O2 ) test - --CORRECT ANSWER--relights a glowing splint Carbonate (CO 3 2- ) test - --CORRECT ANSWER--add dilute acid; effervescence, carbon dioxide produced Sulfate (SO4 2- ) test - --CORRECT ANSWER--add dilute nitric acid then aqueous barium nitrate. Gives white precipitate Chloride (Cl - ) test - --CORRECT ANSWER--add dilute nitric acid then aqueous silver nitrate. Gives white precipitate. Dissolves in dilute ammonia to give colourless solution (of [Ag(NH 3 ) 2 ] + ) ....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
