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.Incorrect: 0
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Question 1
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Which simple laboratory observation most strongly suggests that a sample of water is pure distilled water rather than tap water?
Which simple test and result identify hydrogen gas in a laboratory test?
Which single step is essential to obtain pure dry crystals from a salt solution after dissolving and filtering?
Which observation is characteristic of an ionic compound (e.g., sodium chloride) in different states?
Which method is the most appropriate simple laboratory technique to separate and identify two coloured dyes in an ink sample?
When performing a qualitative test for chloride ions, why is the sample acidified with dilute nitric acid before adding silver nitrate?
Which statement about chromatography Rf values is correct?
Which reagent would you add to test for sulfate ions, and what is the expected result?
Which precipitate colour indicates a bromide ion when an aqueous sample is treated with silver nitrate?
Which reagent and observation identifies carbonate ions specifically (not sulfate or halides)?
Which simple test and result identify oxygen gas in a laboratory test?
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