4.8 Chemical analysis

Practice questions on Chemical analysis

• A student carries out paper chromatography on a food dye. The chromatogram produces three … (4 marks, Explain)
• A student tests an unknown sports drink using paper chromatography. The chromatogram shows… (4 marks, Explain)
• A factory produces a batch of painkiller tablets. A quality control technician uses paper … (4 marks, Explain)
• A student uses paper chromatography to investigate two food colourings, X and Y. Food colo… (4 marks, Explain)
• A student investigates a gas produced during an experiment. They suspect the gas may be ei… (4 marks, Describe)
• A student carries out a flame test on an unknown solution and observes a lilac flame. The … (4 marks, Explain)
• A forensic scientist tests two white powders, substance A and substance B, using precipita… (4 marks, Identify)
• A student uses paper chromatography to investigate two dyes, dye X and dye Y. Dye X produc… (4 marks, Explain)
• Describe how you would test for each of the following gases, and state the positive result… (4 marks, Describe)
• A student is given two ink samples, ink A and ink B. The student uses paper chromatography… (4 marks, Explain)
• A student performs paper chromatography on two paint samples, Paint X and Paint Y, using t… (4 marks, Explain)
• A student carries out paper chromatography on two ink samples, Ink A and Ink B, using two … (4 marks, Explain)
• A scientist wants to find out whether a sample of water collected from a river is a pure s… (4 marks, Describe)
• A pharmacist says that a medicine they have made is a formulation. Describe what is meant … (4 marks, Describe)