Acids & Bases

Annie Guenter


  • All acids have a sour taste.
  • Acids are corrosive to metals. This means that when a metal is soaked in acid, it will break down and produce hydrogen gas.
Some acids include:
  1. Chlorous acid (HClO2)
  2. Nitric acid (HNO3)
  3. Sulfuric acid (H2SO4)
Nitric acid and sulfuric acid are strong acids, and chlorous acid is a weaker acid.


  • Bases are slippery and have a bitter taste.
  • Most bases contain hydroxide.
Bases include:
  1. Sodium hydroxide (NaOH)
  2. Ammonia (NH3)
  3. Magnesium hydroxide (Mg(OH)2)
Magnesium hydroxide and sodium hydroxide are strong bases, while ammonia is a weak base.

pH Scale

Acids have a pH of less than 7, while bases have a pH of greater than 7. If a substance has a pH of exactly 7, then it is neutral.
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