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Tutor HuntTest QuestionsChemistry QuestionsYear 10 Chemistry Questions

 

Pure Substances (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Pure Substances' from the broader topic Chemical Analysis. The test is geared towards the AQA exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which observation is characteristic of an ionic compound (e.g., sodium chloride) in different states?
Which test and observation distinguish bromide ions from iodide ions when treated with acidified silver nitrate?
Which sequence of quick tests will distinguish carbonate ions from sulfate ions?
How can the pale lilac flame of potassium be more easily seen when sodium contamination produces a strong yellow flame?
Which statement correctly describes why an instrumental technique is often preferred over a simple spot test in chemical analysis?
Which precipitate colour indicates a bromide ion when an aqueous sample is treated with silver nitrate?
Which simple laboratory observation most strongly suggests that a sample of water is pure distilled water rather than tap water?
Which result shows that a solid sample contains carbonate ions when treated with dilute acid?
Which test result indicates the presence of ammonia gas?
Which reagent and observation identifies carbonate ions specifically (not sulfate or halides)?
Which observation is the best indicator that a solid sample is a pure substance rather than a mixture?