AP Chem Unit 4 Review

Front

What is a neutralization reaction?

Back

A neutralization reaction is a chemical reaction between an acid and a base that produces a salt and water.

Front

Is the process CO₂(g) → C(s) + O₂(g) a chemical or physical process?

Back

This process is a chemical process.

Front

What is the correct net ionic equation for the reaction of ammonia and hydrochloric acid?

Back

The correct net ionic equation is NH₃(aq) + H⁺(aq) → NH₄⁺(aq).

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 is required for a precipitation reaction to occur?

Back

A precipitation reaction must have a solid ionic product formed from aqueous reactants.

Front

Define oxidation in terms of electron transfer.

Back

Oxidation is the process of losing electrons during a chemical reaction.

Front

Define reduction in terms of electron transfer.

Back

Reduction is the process of gaining electrons during a chemical reaction.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up a chemical reaction without being consumed in the process.

Front

What is the difference between a strong acid and a weak acid?

Back

A strong acid completely dissociates in solution, while a weak acid only partially dissociates.

Front

What is the pH scale and what does it measure?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (acidic) to 14 (basic).