Acids, Bases and Solutions

Which term BEST describes a substance with an excess of H⁺ ions?

• Acid

• Base

• Dissociate

• pH

Which term BEST describes a substance with an excess of OH^- ions?

• Acid

• Base

• Dissociate

• pH

Select ALL pH values that would be considered acidic.

• 2

• 12

• 1

• 7

• 9

Which of the following substances has a pH greater than 7?

• Orange juice

• Vinegar

• Soap

• Milk

What happens to the pH of an acidic solution when a base is added?

• The pH decreases

• The pH increases

• The pH remains the same

• The pH becomes neutral

Which of the following is an example of an acid in an aqueous solution?

• NaCl

• HCl

• KOH

• NH₃

What is the pH of a solution with a high concentration of hydrogen ions?

• High pH

• Low pH

• Neutral pH

• Variable pH

Which of the following is a characteristic of a solution with a pH of 13?

• It is acidic

• It is neutral

• It is basic

• It is neither acidic nor basic

Which of the following is a property of a strong base in an aqueous solution?

• It has a pH close to 7

• It completely dissociates in water

• It does not conduct electricity

• It has a sour taste

How is the pH scale measured?

• From 0 to 7

• From 0 to 14

• From 7 to 14

• From 1 to 10