AP Chemistry Unit 4 Review

Front

What is a limiting reactant?

Back

The limiting reactant is the substance that is completely consumed in a chemical reaction, limiting the amount of product formed.

Front

How do you identify the limiting reactant in a reaction?

Back

To identify the limiting reactant, calculate the moles of each reactant and determine which one produces the least amount of product.

Front

What is oxidation in a chemical reaction?

Back

Oxidation is the process in which an element loses electrons, resulting in an increase in oxidation state.

Front

What are spectator ions?

Back

Spectator ions are ions that do not participate in the actual chemical reaction and remain unchanged in solution.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure the same number of each type of atom on both sides.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations is important because it reflects the conservation of mass, ensuring that matter is neither created nor destroyed in a reaction.

Front

What is the formula for calculating moles?

Back

Moles = mass (g) / molar mass (g/mol).

Front

What is the role of coefficients in a balanced equation?

Back

Coefficients indicate the relative number of moles of each substance involved in the reaction.

Front

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

Back

A strong electrolyte completely dissociates into ions in solution, while a weak electrolyte partially dissociates.

Front

What is the net ionic equation?

Back

The net ionic equation shows only the species that participate in the reaction, omitting spectator ions.