This document discusses acids, bases, and salts. It lists common organic and inorganic acids, and describes how to identify acidic and basic solutions using litmus paper. It explains how metals react with acids and bases, producing hydrogen gas and metal salts. Carbon dioxide production in acid-base reactions is tested using limewater. The reactions of acids with bases, metal oxides, and carbonates/bicarbonates are outlined. Methods for producing sodium hydroxide, chlorine, hydrogen, and bleaching powder from sodium chloride are presented, along with their uses.