Covalent Compound Formula Writing
A Grade 9 science worksheet on writing chemical formulas for covalent compounds, focusing on nomenclature and prefix usage.
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Covalent Compound Formula Writing
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Read each question carefully and follow the instructions to write the correct chemical formulas for covalent compounds.
Covalent bonds are formed when two non-metal atoms share electrons to achieve a stable electron configuration. The prefixes used in naming covalent compounds indicate the number of atoms of each element present in the compound. For example, 'mono-' means one, 'di-' means two, 'tri-' means three, and so on.
1. The prefix for one atom is .
2. The prefix for four atoms is .
3. The prefix for seven atoms is .
4. What is the chemical formula for carbon dioxide?
CO
C2O
CO2
C2O2
5. Which compound has the formula N2O4?
Dinitrogen monoxide
Nitrogen dioxide
Dinitrogen tetroxide
Nitrogen tetroxide
6. Write the chemical formula for sulfur hexafluoride.
7. Write the chemical formula for phosphorus trichloride.
8. Name the covalent compound with the formula P4O10.
9. Name the covalent compound with the formula Cl2O7.
10. The compound with the formula CO is called carbon trioxide.
True
False
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