AP Chemistry - Unit 4 - Thou Shall Not Forget

Front

What do bases do in a chemical reaction?

Back

Bases accept hydrogen ions (H+).

Front

Define limiting reactant.

Back

The limiting reactant is the reactant that runs out first in a chemical reaction, determining the amount of product formed.

Front

In the reaction 2 Al + 3 Cl2 -> 2 AlCl3, if 2 moles of Al and 2 moles of Cl2 are used, which is the limiting reactant?

Back

Cl2 is the limiting reactant.

Front

What is the net ionic equation for the precipitation reaction between sodium carbonate and magnesium sulfate?

Back

CO3^2- + Mg^2+ -> MgCO3.

Front

In the reaction of hydrogen and oxygen to form water, what is produced?

Back

4 H2O molecules are produced, and O2 is the limiting reactant.

Front

What is the role of hydrogen ions in acid-base reactions?

Back

Hydrogen ions (H+) are donated by acids and accepted by bases.

Front

What is the difference between a reactant and a product?

Back

Reactants are substances that undergo a chemical change, while products are the substances formed as a result of the reaction.

Front

How do you identify the limiting reactant in a chemical reaction?

Back

By comparing the mole ratio of the reactants used to the mole ratio in the balanced equation.

Front

What is a net ionic equation?

Back

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

Front

What is the significance of a balanced chemical equation?

Back

A balanced chemical equation ensures that the number of atoms for each element is conserved during the reaction.