2. Acids and Bases
Chapter 10 Section 2

3. Acids and Their Properties
Acids have a sour taste (Remember we do not taste anything in the chemistry lab, but some foods have a sour taste because they are acidic).
Acids turn blue litmus paper red.
Acids react with some metals to make H2.
Acids conduct electric current.
Acids increase the number of H3O+.

4. Uses of Acids Sulfuric Acid – paper, paint, detergents, & fertilizers
Nitric Acid – fertilizers, rubber & plastic
Hydrochloric Acid – separate metals from ores, digestion in your stomach, keeping swimming pools free of algae.
Citric and ascorbic acid (Vitamin C) are found in orange juice.
Acetic acid is found in vinegar.
Carbonic and phosphoric acids in soft drinks.

5. Bases and Their Properties
Bases increase the number of OH-
Bases taste bitter (like acids, many bases are corrosive so….. No tasting, touching or smelling!)
Bases feel slippery
Bases turn red litmus blue
Bases conduct electric current

6. Uses of bases
Sodium hydroxide is used to make soap, paper, oven cleaners, and to unclog drains.
Calcium hydroxide is used to make cement and plaster.
Magnesium and aluminum hydroxides are used as antacids to treat upset stomachs.

7. Safety First!
Acids and bases can be harmful to your skin. Be careful and immediately report any spills to your teacher.