Physical Properties Of Acids

Acidic, Basic and Neutral materials of Class 7

Sour taste: Almost all acidic substances have a sour taste.
Action on litmus solution:Acids turn blue litmus solution red.
Action on methyl orange: Acids turn methyl orange pink.
Action on phenolphthalein:Phenolphthalein remains colorless in acid.
Conduction of electricity: The aqueous solution of acid conducts electricity.
Corrosive nature: Most acids are corrosive in nature. They produce a burning sensation on the skin and make holes on surfaces on which they fall.