Naming Covalent Compounds Worksheet
A Grade 10 science worksheet focusing on the nomenclature of covalent compounds, including prefixes and common exceptions.
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Naming Covalent Compounds
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Read each question carefully and provide the best answer. Remember the rules for naming covalent compounds, including the use of prefixes.
Covalent compounds are formed when two or more nonmetal atoms share electrons. This sharing creates a strong bond. The illustration below shows a typical covalent bond formation.
1. Which of the following elements are most likely to form a covalent bond?
Sodium and Chlorine
Potassium and Oxygen
Carbon and Oxygen
Magnesium and Fluorine
2. What is the correct prefix for 'five' in chemical nomenclature?
tetra-
penta-
hexa-
hepta-
3. The first nonmetal in a covalent compound is named using its element name, while the second nonmetal uses an - suffix.
4. When there is only one atom of the first element in a covalent compound, the prefix is usually omitted.
5. N2O4 is named as .
6. Write the chemical formula for dinitrogen trioxide.
7. Name the covalent compound PCl5.
Match the chemical formula with its correct name.
8. CO
a. Sulfur dioxide
9. SO2
b. Dihydrogen monoxide
10. H2O
c. Carbon monoxide
11. N2O
d. Dinitrogen monoxide