Ch – 5 Acids, Bases And Salts

Priya's Learning Centre

  • The substances which taste sour are acidic in nature and they contain acids.
  • The word acid is derived from the Latin word “acere” which means sour.
  • The substances which taste bitter and are soapy in touch are basic in nature and they contain bases.
  • Special types of substances are used to test whether a substance is acidic or basic. These substances are known as indicators.
  • The indicators change their colour when added to a solution containing an acidic or a basic substance.
  • Some of the examples of acids are :
  • Acetic Acid – Vinegar
  • Formic Acid – Ant’s sting
  • Citric Acid – Citrus fruits
  • Lactic Acid – Curd
  • Oxalic Acid – Spinach
  • Ascorbic Acid – Amla, Citrus fruits
  • Tartaric Acid – Tamarind, Grapes, Unripe mangoes
  • Some of the examples of bases are :
  • Calcium hydroxide – Lime water
  • Ammonium hydroxide – Window cleaner
  • Sodium hydroxide / Potassium hydroxide –…

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Published by Priya Prakash

In the midst of winter, i found there was within me an invincible summer ~ Albert Camus

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