Acids and Bases

Solutions that have more OH– ions than H+ ions are

• acids

• bases

• enzymes

• neutral

A substance is found to have the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would the substance be classified?

• acid

• base

• enzyme

• fatty acid

What type of solution is formed when the H+ ions equal the OH- ions?

• acidic

• basic or alkaline

• neutral

• enzymatic

Acids react with

• water to produce bases and salts
• salts to produce bases and water
• neither bases, salts nor water
• bases to produce salts and water

Which of the following is a base?

• orange juice
• water
• vinegar
• dishwashing detergent

 Which of the following is an acid?

• shampoo
• baking soda
• orange juice
• water

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

• 3
• 9
• 7
• 5

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

• strongly acidic
• slightly acidic
• strongly basic
• slightly basic

Pure water has a pH of 7. Pure water _______.

• is a base
• is a neutral substance
• could be either an acid or a base
• is an acid

Ammonia has a pH of 12.  Ammonia is __________.

• an acid
• a base
• an element
• a metal