<ul><li>Based on Class 10 chapter 2 (CBSE), India</li></ul>

Acids Bases and Salts

<ul><li>Acid + Metal Carbonate/Hydrogencarbonate ---&gt; Salt + H2O + CO2</li><li>Acid / Base + Metal ----&gt; Salt + Hydrogen</li><li>Acid + Base ----&gt; Salt + H2O</li></ul>

Reactions

<ul><li>Neutralise to form salts</li><li>The reaction is highly exothermic</li></ul>

Acid - Base reactions

<ul><li>Dyes which indicate the presence of an acid or base</li><li>Ex ; Hydrangea, Petunia, Geranium&nbsp;</li></ul>

Natural Indicators

<ul><li>Acidic nature is concentration of H+ ions&nbsp;</li><li>Basic nature is concentration OH- ions</li><li>Nature of substance is measured on pH scale (0 to 14)</li><li>Neutral solution - pH 7 ; Acidic solution - pH 0 to 7 ; Basic solution pH 7 to 14</li></ul>

Acidic Nature of a Substance

<ul><li>Acidic and basic solutions conduct electricity because of hydrogen and hydroxide ions respectively&nbsp;</li></ul>

Conduction of Electricity

<ul><li>Common salt is very useful. It can help produce more important compunds.</li><li>Ex ; Sodium Hydroxide, Bleaching Powder, Bakind Soda, Washing Soda</li></ul>

Common Salt

Water of crystallisation is the fixed number of water molecules present in one formula unit of a salt.

Acid-base reaction - Wikipedia

Gayathri Vishwanath