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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.
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Which piece of equipment is most appropriate to warm a salt solution gently to form crystals?
Which method is best for preparing pure crystals of a soluble salt such as sodium sulfate from its aqueous solution?
Which of these describes the correct sequence of steps to obtain dried crystals from a clear salt solution?
Which description best explains why crystals are formed by cooling a warm saturated solution rather than by boiling away all the solvent?
Which statement about the solubility of salts is correct?
In preparing crystals of copper(II) sulfate from copper(II) oxide and sulfuric acid, which observation indicates the reaction is complete (acid used up)?
When making zinc sulfate by reacting zinc metal with sulfuric acid, which observation indicates hydrogen gas is being produced?
Which of the following is the correct ionic equation for the reaction between zinc and hydrochloric acid that produces zinc chloride and hydrogen?
Which of the following will usually increase the size of crystals obtained during crystallisation?
When carrying out a titration to make a pure salt solution, which indicator colour change is commonly used for strong acid vs strong base titrations?
Which of the following is the best reason crystals are washed with a small amount of cold solvent (usually cold distilled water) after filtration?