Naming Chemical Compounds: Ionic and Covalent Techniques

This lesson covers the systematic approach to naming chemical compounds, focusing on binary ionic compounds, ionic compounds with transition metals, compounds with polyatomic ions, and binary covalent compounds. It explains the rules for naming each type, including the use of Roman numerals for transition metals and prefixes for covalent compounds. The lesson also provides examples and steps for converting between chemical formulas and names.

What is a cation?

• A positively charged ion

• A neutral molecule

• A negatively charged ion

• An element on the right side of the periodic table

In a binary ionic compound, which element is named first?

• The element with the lower atomic number

• The anion

• The cation

• The element with the higher atomic number

How do you indicate the charge of a transition metal in a compound?

• By using a prefix

• By using a suffix

• By using a Roman numeral

• By using a subscript

What is the charge of manganese in the compound MnO3?

• 6+

• 4+

• 3+

• 2+

What is a polyatomic ion?

• An ion with no charge

• An ion with only one atom

• An ion with two atoms

• An ion with multiple atoms bonded together

How do you name an ionic compound with a polyatomic ion?

• Write the name of the cation followed by the name of the anion

• Use Roman numerals to indicate the charge

• Use prefixes to indicate the number of atoms

• Change the ending of the anion to -ide

What is the prefix for four atoms in a covalent compound?

• Penta

• Tetra

• Hexa

• Hepta

How do you name the second element in a binary covalent compound?

• By using a prefix and changing its ending to -ide

• By using a Roman numeral

• By using a subscript

• By using its full name

What is the correct name for the compound CO2?

• Carbon oxide

• Carbon dioxide

• Carbon monoxide

• Carbon trioxide

What is the formula for phosphorus pentachloride?

• PCl6

• PCl5

• PCl4

• PCl3