FINAL EXAM REVIEW PART 2

Front

What is an empirical formula?

Back

An empirical formula represents the simplest whole-number ratio of atoms of each element in a compound.

Front

What is a molecular formula?

Back

A molecular formula shows the actual number of atoms of each element in a molecule of a compound.

Front

How do you determine the empirical formula from a molecular formula?

Back

Divide the subscripts in the molecular formula by their greatest common divisor.

Front

What is the first step in solving a stoichiometry problem?

Back

Write a balanced equation.

Front

What is a balanced equation?

Back

A balanced equation has equal numbers of each type of atom on both sides of the equation.

Front

What is a mole ratio?

Back

A mole ratio is a conversion factor derived from the coefficients of a balanced equation.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula to indicate how many molecules or moles are involved.

Front

What is the molar mass of KOH?

Back

The molar mass of KOH is 56.1 g/mol.

Front

How do you calculate molar mass?

Back

Add the atomic masses of all atoms in the formula.

Front

What is a synthesis reaction?

Back

A synthesis reaction occurs when two or more reactants combine to form a single product.