AP Chemistry Unit 4 Review

Front

What is the role of water in the reaction H⁺ + H₂O → H₃O⁺?

Back

Water acts as a base accepting a proton.

Front

Define a base in the context of acid-base chemistry.

Back

A base is defined as a proton acceptor.

Front

Identify the spectator ions in the reaction of sodium chloride with silver nitrate.

Back

The spectator ions are sodium (Na⁺) and nitrate (NO₃⁻).

Front

What must occur for a reaction to be classified as an oxidation-reduction reaction?

Back

The oxidation number of two species must change.

Front

What characterizes a combustion reaction?

Back

Oxygen must be a reactant, and carbon dioxide (CO₂) and water (H₂O) are products.

Front

What is an acid according to the Brønsted-Lowry theory?

Back

An acid is a proton donor.

Front

Explain the concept of oxidation in terms of electron transfer.

Back

Oxidation is the loss of electrons by a species.

Front

What is reduction in the context of redox reactions?

Back

Reduction is the gain of electrons by a species.

Front

What are the products of a neutralization reaction between an acid and a base?

Back

The products are typically a salt and water.

Front

Define a strong acid and provide an example.

Back

A strong acid completely dissociates in solution; for example, hydrochloric acid (HCl).