Introduction to Acids and Bases

Which of these pH values represent an acid?

• 4

• 8

Milk is a very weak acid. What might its pH value be?

• 6.5

• 7.8

The properties of acids include conducting electricity when dissolved in water, sour taste, and they react with metals to produce hydrogen gas.

• True

• Fasle

Which of the following is an acid?

• vinegar

• bleach

Which one of the following is an example of a base? (a)  

• orange juice

• dish soap

• vinegar

• lemons

Tastes bitter: (a)  

• acids

• bases

• neutral

• pH paper

Bases, also known as ​ (a)   will turn litmus paper ​ (b)   . This is because they have a pH ​ (c)   . They taste ​ (d)   .

• alkali and OH-

• blue

• above 7

• bitter

• below 7

• H+

• red

• sour

Bases do not react with ​ (a)   or carbonates, taste ​ (b)   , feel ​ (c)   , and turn ​ (d)   litmus paper ​ (e)   .

• metals

• bitter

• slippery

• red

• blue

• sour

• sweet

• dry

The pH value of an acid represents its __________ of positive ions in the solution

• amount

• concentration

Which of the following is a property of a base?

• bitter taste

• reacts with metals