Formula Mass Calculation Worksheet
A Grade 12 Chemistry worksheet focusing on calculating formula mass for various chemical compounds, including ionic and covalent substances.
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Formula Mass Calculation Worksheet
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Read each question carefully and calculate the formula mass for the given compounds. Show all your work for full credit. Use the atomic masses from the periodic table (rounded to two decimal places).
1. The sum of the atomic masses of all atoms in a chemical formula is called the .
2. For an ionic compound, we refer to it as mass, while for a covalent compound, we use mass.
3. Explain the difference between atomic mass and formula mass.
4. Which of the following compounds has the largest formula mass?
H₂O
CO₂
NH₃
CH₄
Calculate the formula mass for each of the following compounds. Show your calculations.
5. Sodium Chloride (NaCl)
6. Sulfuric Acid (H₂SO₄)
7. Calcium Phosphate (Ca₃(PO₄)₂)
8. The units for formula mass are typically grams per mole (g/mol).
True
False
Match the term with its definition.
9. Atomic Mass Unit (amu)
a. The mass of one mole of a substance
10. Molar Mass
b. Unit used to express atomic and molecular masses