pH Scale

On the pH scale, an acid is a compound that produces a solution with a pH (a)   7.

On the pH scale, a base is a compound that produces a solution with a pH (a)   7.

What pH does a neutral substance have?

• 5

• 6

• 7

• 8

Which of the following is the weakest acid?

• bananas (pH 5)

• tomatoes (pH 4)

• cheese (pH 6)

• orange juice (pH 3)

What is pH a measure of?

• Density

• Mass

• Hydrogen Ion Concentraion

• Polarity

Which of the following pH values represents the greatest concentration of -OH ions?

• 3

• 6

• 9

• 1

Which of the following pH values represents the greatest concentration of H+ ions?

• 3

• 6

• 9

• 1

The purpose of a buffer is to ___________.

• Neutralize an acid or base and maintain pH.

• Make your car's new wax look shiny.

• Add volume to your hair.

• All of the above.

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water