An acid is a substance that produces ________ ions in a solution.

• Hydrogen

• Hydroxide

• Sodium

• Acetate

Which substance produces hydroxide ions in solution?

• Acid

• Base

• Hydronium

• Ester

Identify the hydrogen ion

• H

• H⁺

• H^-

• OH^-

Which substance turns litmus paper shades of red?

• Acid

• Base

• Water

• Salt

H₃O⁺ is the formula for...

• a Hydrogen ion

• a Hydroxide ion

• a Hydronium ion

• a Water molecule

Which of the following is a characteristic of an acid?

• turns litmus paper blue

• feels slippery

• produces hydroxide ions in solution

• has a sour taste

Which of the following would be the most acidic rating on a typical pH scale?

• 0

• 1

• 7

• 14

On the typical pH scale, a neutral substance has what rating?

• 0

• 2

• 7

• 14

Which answer choice best describes a substance with a pH of 2?

• A strong base

• A strong acid

• A weak base

• A weak acid

A solution with a pH of 3 is ______ times more acidic than a solution with a pH of 5.

• 0

• 10

• 20

• 100