Revision Notes For Class 10 Science Chapter 2 - Acids, Bases and Salts

Lemons, oranges and vinegar taste sour because they are acids. Usually, all acids have a sour taste because of the concentration of hydrogen ions. Bases like soaps and toothpaste, on the other hand, taste bitter and are also slippery because they contain metal and hydrogen ions. These substances react with the fats and oils in the skin and thereby causes that “slippery” feeling. Salts are a combination of acids and bases – for example, the common salt – sodium chloride, comprises of both an acid and a base.

CBSE Class 10 Science Chapter 2 Acids, Bases and Salts

Further Reading

Salts – Types of Salts & Hydrolysis of Salts
Acids, Bases and Salts

Frequently asked Questions on CBSE Class 10 Science Notes Chapter 2: Acids Bases and Salts


What is ‘Neutralisation reaction’?

A neutralisation reaction is a chemical reaction where an acid and a base are combined with the intent of producing a neutral pH level.


What is ‘Litmus’?

Litmus paper’ is coloring matter from lichens that turns red in acid solutions and blue in alkaline solutions and is used as an acid-base indicator.


What is an ‘Olfactory indicator’?

An ‘Olfactory indicator’ is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution.


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