PH Basics

The pH scale is a range from:

• 1-7
• 0-14
• 1-5
• 1-20

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

What is the only substance with a neutral pH of 7?

• Milk

• Orange Juice

• Baking Soda

• Blood

Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.

• lower
• higher
• the same
• none of the above

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

• Both of the solution are Bases

• Both of the solution are Acids

• The Baking soda is an acid and the Bleach is a base

• The baking soda is a base and the Bleach is an Acid.

If you have a substance with a pH of 7.1 it is .....

• Acid

• Base

• Neutral

Water has a neutral because

• it has more H+ ions than OH-

• it has more OH- ions than H+

• it does not produce any ions

• it has an equal amount of H+ and OH- in solution

According to the pH range which substance is more acidic than lemon juice

• Hydrochloric acid

• NaOH

• Blood

• Vinegar

Which of the following is the strongest base?

• 4

• 14

• 8

• 15