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Soluble Salts (GCSE Chemistry)
The following is a GCSE Chemistry test covering 'Soluble Salts' from the broader topic Chemical Changes. The test is geared towards the AQA exam board style syllabus.Incorrect: 0
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Question 1
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Why is excess insoluble base used rather than excess acid when making a soluble salt by reacting an acid with an insoluble base?
Which observation shows that a metal carbonate is in excess when added to excess hydrochloric acid during salt preparation?
Which statement about making soluble salts by titration is correct?
Why is it important to repeat an experiment and take a mean when preparing a soluble salt or measuring yield?
Which of the following is the correct ionic equation for the reaction between zinc and hydrochloric acid that produces zinc chloride and hydrogen?
When preparing a soluble salt by reacting an insoluble metal oxide with acid, why is it common to add the metal oxide until it is in excess before filtering?
Why is it better to crystallise a salt from a warm concentrated solution rather than evaporating to dryness?
What is the main reason for filtering a reaction mixture when preparing a soluble salt from an insoluble base and acid?
Which of the following will usually increase the size of crystals obtained during crystallisation?
Which of these ionic equations correctly represents the reaction of insoluble copper(II) oxide with hydrochloric acid to form copper(II) chloride and water?
Which of the following is the best final drying method for delicate crystals (e.g., hydrated copper sulfate) without causing decomposition?
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