preparing soluble salts

• What does every salt contain?

  A positive ion and a negative ion
• From where can the metal ion in salts come?

  From metal, metal oxide, hydroxide, or carbonate
• Why can't copper sulfate be made by reacting copper with dilute sulfuric acid?

  Copper is not reactive enough
• What acid is used to make copper sulfate?

  Sulfuric acid
• What is the first step in making a soluble salt?

  Start with a fixed amount of dilute sulfuric acid
• Why is dilute sulfuric acid considered the limiting reactant?

  It will run out before other reactants
• What should be avoided when heating the acid?

  Allowing it to boil
• What should you do after adding copper oxide to the acid?

  Stir the solution with a glass rod
• What color indicates the formation of copper sulfate in the solution?

  Blue
• When should you stop adding copper oxide to the solution?

  When the solution is clear blue
• What is done with unreacted copper oxide after the reaction?

  It is filtered away
• What equipment is used to filter the unreacted copper oxide?

  Filter funnel and filter paper
• What is the next step after filtering the solution?

  Evaporate the solution to form crystals
• How is the copper sulfate solution heated for evaporation?

  Gently over a beaker of boiling water
• What should be done when half the solution remains during evaporation?

  Leave the solution for 24 hours
• How are the copper sulfate crystals dried after formation?

  Pat them dry with a paper towel
• What is the final product of the process described in the video?

  Pure dry crystals of copper sulfate
• What are the steps to make a soluble salt using an acid?

  1. Start with dilute sulfuric acid.
  2. Add copper oxide and stir.
  3. Filter out unreacted copper oxide.
  4. Evaporate the solution to form crystals.
  5. Dry the crystals with a paper towel.
• What are the types of metal ions that can be used to make salts?

  • Metal itself
  • Metal oxide
  • Metal hydroxide
  • Metal carbonate
• What are the properties of copper sulfate?

  • It is a soluble salt.
  • It has a blue color in solution.
  • It forms crystals upon evaporation.
• What precautions should be taken when heating sulfuric acid?

  • Do not allow it to boil.
  • Heat gently to avoid bubbling over.
  • Ensure all acid reacts to avoid contamination.