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Nomenclature Quiz

Nomenclature Quiz - Free Chemical Compounds Test - FreudlyTake a free nomenclature quiz to explore your nomenclature knowledge and discover your results. Quick, no sign-up needed. Start now!en
See your chemical naming skills in about 10 minutes and learn where you stand. Free, no sign-up, 16 questions give clear feedback across key compound and formula topics.
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Questions: 1610 minutes
08:30
July 22, 2026
July 22, 2026
Material has been updated
July 22, 2026
Material has been published
3,192 views
277 completions
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Scale Explorer

How the Scales are Structured

example score
7/16
Chemical Nomenclature Knowledge (CNK)
Measures your ability to correctly name chemical compounds and translate names into formulas across common nomenclature rules.
Foundations to build
Developing command
Strong command
0 – 6: Foundations to build | 7 – 12: Developing command | 13 – 16: Strong command
A score of 7 indicates developing command, showing you can apply many common naming rules but may have some gaps across compound types.
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just completed the test
DATA-BASED USER COHORTS

Who Usually Takes This Test?

Chem Students Reviewing
41%OF USERS
High school and college chemistry students use it to practice naming compounds and writing formulas before quizzes, labs, or exams.
Pre-Health Prereq Takers
34%OF USERS
People in pre-med, nursing, pharmacy, or allied health tracks take it to refresh core chemistry skills needed for coursework and entrance tests.
Tutors and Self-Learners
25%OF USERS
Tutors, homeschoolers, and independent learners use it as a quick checkpoint to spot gaps across ionic, covalent, acids, hydrates, and basic organic naming.
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
Benchmarking

See How You Compare

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.
Chemical Nomenclature Knowledge (CNK)
Chemical Nomenclature Knowledge (CNK)
Average
7.6
Normal range
5.6 — 9.6
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.
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SAMPLE QUESTIONS

Example Questions From the Test

    • CaNO₂ — one calcium with one nitrite
    • Ca(NO₃)₂ — one calcium with two nitrates
    • Ca(NO₂)₂ — one calcium with two nitrites
    • Ca₂NO₃ — two calciums with one nitrate
    • NO₅ — one nitrogen atom and five oxygen atoms
    • N₂O₅ — two nitrogen atoms and five oxygen atoms
    • N₅O₂ — five nitrogen atoms and two oxygen atoms
    • N₂O₄ — two nitrogen atoms and four oxygen atoms
    • Magnesium hydroxide
    • Magnesium hydrogen oxide
    • Magnesium oxide
    • Magnesium(II) hydride
These are 3 of the 16 real questions — the rest appear in the test. No sign-up needed to start.
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WHAT THE TEST MEASURES
About This Assessment

Nomenclature Quiz - Symptoms and Signs

Test your chemical nomenclature knowledge with 16 questions on naming compounds and translating names into formulas. Work through ionic and molecular compounds, transition metals, polyatomic ions, acids, hydrates, and introductory organic nomenclature. Each item has one correct answer, and your total places your performance in one of three knowledge bands. The quiz is free, quick to complete, and requires no sign-up.

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