PRACTICE: Chemical Formulas and Chemical Bonds

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond formed when two nonmetals share electrons.

Front

How many atoms of carbon are in the formula C6H12O6?

Back

There are 6 atoms of carbon in C6H12O6.

Front

What holds the atoms in a molecule together?

Back

Atoms in a molecule are held together by chemical bonds.

Front

What is a compound? Give an example.

Back

A compound is a substance formed when two or more different elements are chemically bonded together. Example: CO2 (carbon dioxide).

Front

Identify the type of bond in NO2.

Back

NO2 has a covalent bond.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons between a metal and a nonmetal, while covalent bonds involve the sharing of electrons between nonmetals.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O.

Front

What does the subscript in a chemical formula indicate?

Back

The subscript in a chemical formula indicates the number of atoms of the element present in the molecule.

Front

What is the chemical formula for carbon dioxide?

Back

The chemical formula for carbon dioxide is CO2.

Front

What type of bond is formed between sodium (Na) and chlorine (Cl)?

Back

An ionic bond is formed between sodium (Na) and chlorine (Cl).