Polyatomic Ions Quiz
Gauge your grasp of common polyatomic ions in about 10 minutes. Get a clear score band from 16 targeted questions on names, formulas, charges, and building neutral ionic compounds.
08:30
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BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
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Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Below is a preview of how scores are typically distributed across each scale.
Polyatomic Ions Knowledge (PIK)
Polyatomic Ions Knowledge (PIK)
Average
8.6
Normal range
6 — 11.1
min.
0
max.
16
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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SAMPLE QUESTIONS
Example Questions From the Test
- Cl−, the monatomic chloride ion
- NH4+, the ammonium ion
- NH3, a neutral ammonia molecule
- H+, the hydrogen ion
- 2−, because there are two phosphate ions
- 3−, because the charge is counted only once
- 6+, because two ions reverse the sign
- 6−, because two 3− charges add together
- Cu(C2H3O2)2 — one copper ion with two acetate ions
- Cu2(C2H3O2) — two copper ions with one acetate ion
- CuC2H3O2 — a one-to-one ion ratio
- Cu2(C2H3O2)3 — two copper ions with three acetate ions
WHAT THE TEST MEASURES
About This Assessment
Polyatomic Ions Quiz - Symptoms and Signs
Test your knowledge of common polyatomic ions with 16 focused chemistry questions. Identify names, formulas, and charges, then apply charge-balancing rules to construct and interpret neutral ionic compounds. Topics include nitrate, sulfate, ammonium, phosphate, hydroxide, acetate, carbonate, and permanganate. Your total score places your performance in one of three knowledge bands. The quiz is free, and no sign-up is needed.
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