Chemical Formulas Worksheet
A Grade 10 science worksheet covering chemical formulas, types of compounds, and balancing equations.
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Chemical Formulas Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following represents the chemical formula for water?
CO2
H2O
NaCl
O2
2. What does the subscript '2' in the chemical formula O2 represent?
Two different elements
Two atoms of oxygen
Two molecules of oxygen
A charge of +2
3. A chemical formula shows the types of and the number of of each element in a compound.
4. Ionic compounds are formed between a and a , while covalent compounds are formed between two .
5. Explain the difference between an empirical formula and a molecular formula.
6. The chemical formula for sodium chloride is NaCl.
True
False
7. A coefficient in a chemical formula indicates the number of atoms of an element.
True
False
Match the chemical formula with its correct name.
8. HCl
a. Carbon dioxide
9. CO2
b. Hydrochloric acid
10. H2SO4
c. Sulfuric acid
11. Balance the following chemical equation:
H2 + O2 → H2O
12. Balance the following chemical equation:
CH4 + O2 → CO2 + H2O
This image shows various chemical formulas, illustrating the representation of different compounds.