ACID BASES & SALTS ncert_class7 PointsToRemember

• substances having Sour taste Are Acids Or contains Acids
• substances having bitter taste or feel soapy in touch contains Bases 
  

• INDICATORS : Used to show weather the substance is acidic or basic . Most commonly used indicators are LICHENS 
• Indicators when added to acidic solutions it turns RED and when added to basic solution it turns BLUE 
• ACID turns Blue Litmus Paper RED 
• BASES turns Red Litmus Paper BLUE 
• when acids and bases both are mixed with each other we get SALTS which maybe Acidic, Basic or Neutral 
• Acid + Bases = salts + water
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  1.Acetic Acid	Vinegar
  2. Formic Acid	Ant’s Sting
  3. Citrus Acid	Citrus Fruits Eg Oranges and Lemons
  4.Lactic Acid	Curd
  5. Oxalic Acid	Spinach
  6. Ascorbic Acid    (vitamin C)	Amla ,Citrus Fruits
  7. Tartaric Acid	Tarmarind ,grapes,