Review: Acids and Bases

What does pH stand for?

• potential of Hydroxide

• potential of Hydrogen

• potential of Hydronium ion

• potential of Helium

What is the best course of action when someone accidentally ingested a strong acid?

• ask them to vomit

• ask them not to do anything

• ask them to drink water

• ask them to drink a basic substance

Steven used a red cabbage as an indicator for the solution his using in his experiment. He noticed that the solution changed color from purple to bluish-green. Is the solution a neutral, acid, or basic substance?

• none of the above

• neutral

• acid

• base

Albert used a pH meter to detect whether a compound is an acidic, neutral, or basic substance. The pH meter showed a 2.35 pH value. Is the compound acidic, basic, or neutral?

• acid

• base

• neutral

• none of the above

What is the relationship of the H⁺ concentration of a solution to its pH value?

• directly proportional

• inversely proportional

• equal

• H⁺ concentration is always lower than pH.

Based on Arrhenius's theory, how is an acid defined?

• It is a substance that delivers the H⁺ ion in a solution.

• It is a substance that delivers the OH^- ion in a solution.

• It is a substance that delivers the NH₄⁺ ion in a solution.

• It is a substance that delivers the H₂O in a solution.

Based on Arrhenius's theory, how is a base defined?

• It is a substance that delivers the H⁺ ion in a solution.

• It is a substance that delivers the OH^- ion in a solution.

• It is a substance that delivers the NH₄⁺ ion in a solution.

• It is a substance that delivers the H₂O in a solution.

Based on the following pH scale, which of the following substances is an acid?

• 
• 
• 
• 

Which of the following options is NOT a characteristic of a base substance?

• pH > 7

• red litmus paper turns blue

• tastes sour

• reacts with acids producing salt & water

If a substance has a pH value of 14, how will you describe the substance's H⁺ concentration?

• high

• low

• pH = H⁺

• cannot be described