CHEM Ch.7 Review

Front

Compounds made from only nonmetals are _________________ compounds.

Back

Covalent

Front

In which compound is the percent composition by mass of Cl equal to 42%? HClO (gram formula mass = 52 g/mol), HClO2 (gram formula mass = 68 g/mol), HClO3 (gram formula mass = 84 g/mol), HClO4 (gram formula mass = 100 g/mol)

Back

HClO3 (gram formula mass = 84 g/mol)

Front

Name the following compound: N2O2

Back

Dinitrogen dioxide

Front

Name the following compound: SO3

Back

Sulfur trioxide

Front

The formula of a compound having the smallest whole-number ratio of atoms in the compound is called ____?

Back

Empirical Formula

Front

What type of bond is formed between two nonmetals?

Back

Covalent bond

Front

What is the molecular formula of a compound?

Back

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

Front

What is the difference between empirical and molecular formulas?

Back

Empirical formula shows the simplest whole-number ratio of elements, while molecular formula shows the actual number of atoms.

Front

What is the percent composition of an element in a compound?

Back

The mass percentage of that element in the total mass of the compound.

Front

What is the gram formula mass of a compound?

Back

The sum of the atomic masses of all atoms in the compound's formula.