Chem 20 Acids and Bases

Which statement is true when acids and bases are mixed together?

• acids become stronger
• bases become stronger
• there is no change
• they neutralize each other

What is the pH of water?

• 0
• 4
• 7
• 14

What does a pH of 1 indicate about a liquid?

• it is a strong base

• it is a weak base 

• it is a weak acid

• it is a strong acid

Litmus paper can tell you if a solution is acidic, neutral or basic by changing color when placed in a solution.  If you test a base with litmus paper, it will turn ____________.

• purple
• red
• blue
• pink

When dissolved in water, acids produce:

• bases

• salts

• hydronium ions

• hydroxide ions

Any substance that produces hydroxide ions in water is known as _____________.

• an acid

• a hydroxide producer

• a base

• a neutral substance

What is the range of pH values in an acidic solution?

• 0-7
• 7-14
• 15-239058204958
• pH = 7

This is one way to show a neutral substance:

• [H⁺]=[OH^-]
• [H⁺]~~[OH^-]
• [H⁺]<[OH^-]
• [H⁺]>[OH^-]

An indicator will ______________ when it is in contact with an acid or base

• bubble

• form a new substance

• change color

• stay the same color

Acids have a _______ taste. 

• sour
• bitter
• sweet
• salty