Polyatomic Ions Worksheet
A Grade 10 Chemistry worksheet focusing on naming, formulas, and charges of common polyatomic ions.
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Polyatomic Ions Worksheet
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Date:
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Read each question carefully and provide the best answer. Remember to pay attention to charges and subscripts when writing formulas.
1. Which of the following is the correct formula for the sulfate ion?
SO3^2-
SO4^2-
S^2-
SO2^2-
2. What is the charge of the ammonium ion?
-1
+1
-2
+2
3. The polyatomic ion with the formula CO3^2- is called .
4. The formula for the hydroxide ion is .
5. A polyatomic ion is a group of covalently bonded atoms that has an overall .
6. Explain why polyatomic ions are considered a single unit when forming ionic compounds, even though they consist of multiple atoms.
Match the polyatomic ion with its correct formula and charge.
7. Nitrate
a. PO4^3-
8. Phosphate
b. NO3^-
9. Carbonate
c. CO3^2-
10. All polyatomic ions have a negative charge.
True
False