Lesson 2 Acids and Alkalis

• Neutralisation is a chemical change.
• Acid + alkaline = salt + water
• A salt is a type of chemical that is related to an acid and is usually made from acids.
• Sodium Carbonate (Na2CO3) is added to ethanoic acid to neutralise it.
• It takes 20cm3 of Sodium Carbonate to produce a pH of 7
• Limewater is used tot test for carbon dioxide.
• A reaction produced bubbles of carbon dioxide (CO2) gas. How would you identify the gas?

  Bubble the gas through limewater. The limewater turns milky white.