ionic equations

• What does aqueous hydrochloric acid react with in the example provided?


  Solid calcium carbonate
• What are the products formed when aqueous hydrochloric acid reacts with solid calcium carbonate?


  Aqueous calcium chloride, liquid water, and carbon dioxide gas
• What is the purpose of ionic equations in chemical reactions?


  • Show only the reacting particles and products
  • Exclude spectator ions that do not participate in the reaction
• What must you ensure before writing an ionic equation?


  Your symbol equation is balanced
• What happens to ionic compounds in aqueous solution?


  They break up into their ions
• How do you write the ionic equation for the reaction between CaCl2 and NaOH?


  By writing out the ions separately and removing spectator ions
• In the example provided, which ions are considered spectator ions?

  Sodium ions (Na⁺) and chloride ions (Cl⁻)
• What is a half equation in the context of chemical reactions?


  • Shows the movement of electrons
  • Represents either oxidation or reduction processes
• What should the overall charge be in a half equation?


  The same on both sides of the reaction
• What is the significance of balancing a symbol equation before writing an ionic equation?


  It ensures that the number of atoms and charge are conserved