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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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Which property would you measure to check whether a crystalline solid sample is impure?
Which sequence of quick tests will distinguish carbonate ions from sulfate ions?
When excess solid carbonate remains after adding it to acid to make a salt, which observation would show that the carbonate is in excess?
Which indicator and colour change is suitable when titrating a strong acid with a strong base?
Which reagent would you add to test for sulfate ions, and what is the expected result?
Which single step is essential to obtain pure dry crystals from a salt solution after dissolving and filtering?
Which statement about chromatography Rf values is correct?
Which statement correctly describes why an instrumental technique is often preferred over a simple spot test in chemical analysis?
Which test result indicates the presence of ammonia gas?
What is the immediate observable result when silver nitrate solution is added to an acidified solution that contains chloride ions?
Which instrumental technique is commonly used to identify metal ions by their characteristic emission lines?