The PH Scale

If pure water is added to an acid with a pH of 3, what happens to the pH of the solution?

• the pH increases to above 3

• the pH decreases to below 3

• the pH stays the same at 3

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

Substances that taste sour like lemon juice tend to be classified as

• Acids

• Bases

• Salts

• All

7 on the pH scale is

• Acidic

• Basic

• Neutral

A solution with a pH of 3.6 would be...

• an acid

• a base

• neutral

A solution with a pH of 8.6 would be...

• an acid

• a base

• neutral

Which of the following is the most acidic?

• Baking Soda

• Lemon Juice

• Sprite

• Bleach

Which of the following is the most basic (alkaline)?

• Baking Soda

• Lemon Juice

• Sprite

• Bleach

When mixed with an indicator (cabbage juice), what color do bases turn?

• dark red, bright pink, magenta

• purple

• blue, green, yellow

• brown, black, grey

Which pH value represents a neutral solution?

• 0

• 7

• 14

• 10