Acids and Bases

Acids and Bases

Acids and Bases

Many acidic and basic solutions are colorless and odorless. There are molecular substances called indicators that change color when they come into contact with acids or bases.

• cabbage juice
• litmus 
• universal

Acids:

• taste sour
• litmus paper ---> red
• react with strong bases to produce salt and H₂O

Bases:

• taste bitter
• litmus paper ---> blue
• react with acids to produce salt and H₂O

Substances with a pH 0-7 are acids, while substances with a pH 7-14 are called bases. Substances in the middle (7) are neutral.