AP UNIT 4 Chemical Reactions

Front

What is oxidation in a chemical reaction?

Back

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

Front

What is a net ionic equation?

Back

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

Front

What are spectator ions?

Back

Spectator ions are ions that do not undergo any chemical change during a reaction and remain in solution.

Front

What is a precipitation reaction?

Back

A precipitation reaction occurs when two aqueous solutions react to form an insoluble solid, known as a precipitate.

Front

What is the balanced net ionic equation for the reaction between NaCl and AgNO3?

Back

Ag+(aq) + Cl−(aq) → AgCl(s) is the balanced net ionic equation for the formation of the precipitate.

Front

What is the role of zinc in the reaction Zn + H2O → ZnO2 + H2?

Back

Zinc is oxidized in this reaction as it loses electrons to form ZnO2.

Front

What is the definition of a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Front

What is the difference between a reactant and a product?

Back

Reactants are the starting materials in a chemical reaction, while products are the substances formed as a result of the reaction.

Front

What does it mean for a substance to be soluble?

Back

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

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the law of conservation of mass is obeyed, meaning the number of atoms of each element is the same on both sides of the equation.