Common Acids and Bases

The Acidic Environment‎ > ‎1. Indicators‎ > ‎

Classify common substances as acidic, basic or neutral

  • Chemical substances can be classified as acidic, basic or neutral.
  • Classification is usually based on the concentration of hydrogen ions (H+), or hydronium ions (H3O+), produced when a substance is dissolved in water.


  • Citric acid (present in citric fruits)
  • Acetic acid (present in vinegar)
  • Carbonic acid (present in carbonated soft-drinks)
  • Sodium carbonate (washing soda)
  • Sodium hydrogen carbonate (baking soda)
  • Magnesium hydroxide (Milk of Magnesia)
  • Antacid tablets
  • Water
  • Glucose (sugar)
  • Sodium chloride (table salt)

Examples of common acidic, basic and neutral substances