Chemical Formulas Worksheet
This worksheet covers fundamental concepts of chemical formulas, including naming compounds, identifying types of bonds, and understanding subscripts, suitable for Grade 9 science students.
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Chemical Formulas Assessment
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Read each question carefully and provide the best answer. Show your work where applicable.
1. What does the subscript '2' in the chemical formula H₂O indicate?
There are two oxygen atoms.
There are two hydrogen atoms.
The molecule has two bonds.
The atomic mass is two.
2. Which of the following represents an ionic bond?
Both a and b
Neither a nor b
3. A chemical formula uses chemical and to represent the composition of a compound.
4. The formula unit for an ionic compound is the whole-number ratio of ions.
5. Explain the difference between a molecular formula and an empirical formula. Provide an example for each.
6. In a chemical formula, a coefficient indicates the number of atoms of an element in a compound. (True/False)
True
False
7. The chemical formula for calcium chloride is CaCl. (True/False)
True
False
Match the chemical formula with its name.
8. NaCl
a. Carbon Dioxide
9. CO₂
b. Sodium Chloride
10. H₂SO₄
c. Sulfuric Acid