Watch the step-by-step process of preparing pure, dry hydrated copper sulfate crystals. This video shows you exactly how to react an insoluble base with an acid to create a soluble salt. This is a mandatory practical for your AQA GCSE Chemistry exam. Topic 4.4.2.3 (Soluble Salts): We demonstrate the reaction between sulfuric acid and copper oxide (an insoluble base). Equation: CuO+H2SO4→CuSO4 +H2O The Method (Step-by-Step): Heating: We warm the dilute sulfuric acid to ensure the reaction is fast. Adding Excess: Copper oxide is added until it stops dissolving. This ensures all the acid has reacted (neutralisation). Filtration: We filter the mixture to remove the unreacted copper oxide, leaving a clear blue solution of copper sulfate. Crystallisation: The solution is heated in an evaporating basin over a water bath to evaporate some water, then left to cool so crystals can form. Please Note: This video is designed as a revision aid to help you visualize the practical steps and equipment with the help of AI. For more AQA GCSE Chemistry revision notes, quizzes, and predicted papers, visit our website: https://passmygcsescience.com/ Access the full AQA GCSE Chemistry Specification here: https://www.aqa.org.uk/subjects/scien... #GCSEChemistry #AQAChemistry #RequiredPractical1 #CopperSulfate #Crystallisation #MakingSalts #ChemicalChanges #Filtration #ScienceRevision #PassmyGCSEscience