Chemistry final review

Front

What is an ionic compound?

Back

An ionic compound is formed when a metal reacts with a nonmetal, resulting in the transfer of electrons and the formation of charged ions.

Front

What is the relationship between pOH and [OH-]?

Back

The concentration of hydroxide ions [OH-] can be calculated using the formula [OH-] = 10^(-pOH). For a pOH of 3.0, [OH-] = 0.001 M.

Front

What is the name of the compound N2O3?

Back

Dinitrogen trioxide.

Front

How many electrons are in a full outer shell (excluding the first level)?

Back

8 electrons.

Front

What is the balanced equation for the reaction of sodium with water?

Back

2Na + 2H2O → 2NaOH + H2.

Front

How do you calculate the mass of hydrogen produced from a reaction?

Back

Use stoichiometry based on the balanced equation and the molar mass of hydrogen.

Front

What is the formula for calculating pOH?

Back

pOH = -log[OH-].

Front

What is the difference between a cation and an anion?

Back

A cation is a positively charged ion, while an anion is a negatively charged ion.

Front

What is the significance of a full outer electron shell?

Back

Atoms with a full outer shell are generally more stable and less reactive.

Front

What is the molarity of a solution?

Back

Molarity is the number of moles of solute per liter of solution (M = moles/L).