AP Chemistry 4.1-4.4

Front

What are the coefficients that balance the equation N₂ + H₂ → NH₃?

Back

1, 3, 2

Front

What is the net ionic equation for the reaction: Fe³⁺(aq) + 3Cl⁻(aq) + Na⁺(aq) + OH⁻(aq) → Fe(OH)₃(s) + Na⁺(aq) + Cl⁻(aq)?

Back

Fe³⁺(aq) + OH⁻(aq) → Fe(OH)₃(s)

Front

What is the definition of a precipitate in a chemical reaction?

Back

A precipitate is an insoluble solid that forms when two solutions are mixed.

Front

What are the coefficients that balance the equation Na + ZnI₂ → NaI + Zn?

Back

2, 1, 2, 1

Front

What are spectator ions in a chemical reaction?

Back

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

Front

What is the definition of a net ionic equation?

Back

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

Front

What does it mean for a substance to be soluble?

Back

A soluble substance can dissolve in a solvent, forming a homogeneous solution.

Front

What is the difference between soluble and insoluble substances?

Back

Soluble substances can dissolve in a solvent, while insoluble substances do not dissolve significantly.

Front

How do you determine the coefficients needed to balance a chemical equation?

Back

By ensuring that the number of atoms of each element is the same on both sides of the equation.

Front

What is the role of hydroxide ions (OH⁻) in a chemical reaction?

Back

Hydroxide ions can react with cations to form insoluble precipitates.