Periodic Trends Quiz

Understand periodic table patterns in about 10 minutes, from atomic size to electronegativity. Get a clear score band from 16 free questions, no sign-up needed.

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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

3,953 views

356 completions

338 likes

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How the Scales are Structured

example score

8/16

Periodic Trends Knowledge (PTK)

Measures how well you understand and can apply key periodic table trends such as atomic radius, ionization energy, electronegativity, and reactivity.

Foundations to review

Developing understanding

Strong understanding

0 – 6: Foundations to review | 7 – 12: Developing understanding | 13 – 16: Strong understanding

A score of 8 indicates a developing understanding, with many major trends recognized but some additional practice needed for exceptions, ions, and applied comparisons.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

High school chemistry students

46%OF USERS

Students use it to review periodic trends for class, homework, and unit tests by practicing quick comparisons across the table.

Intro college chem learners

34%OF USERS

General chemistry students take it to check whether they can explain and predict changes like atomic radius, ionization energy, and electronegativity.

Exam and tutoring prep

20%OF USERS

People preparing for standardized exams or tutoring sessions use it to find weak spots in trends, ions vs atoms, and reactivity patterns.

BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.

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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.

Periodic Trends Knowledge (PTK)

Average

8.1

Normal range

5.3 — 11

min.

max.

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

- Nitrogen
- Oxygen
- Fluorine
- Carbon
- Na2O is acidic, while SiO2 is basic.
- MgO is amphoteric, while Al2O3 is strongly basic only.
- Al2O3 is acidic only, while phosphorus oxides are basic.
- Na2O is basic, while Al2O3 is amphoteric.
- H–F
- N–H
- O–H
- C–H

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

Periodic Trends Quiz - Symptoms and Signs

Test your understanding of the patterns that shape the periodic table with this free 16-question periodic trends quiz. Compare atoms and ions, interpret changes across periods and down groups, and apply trends in radius, ionization energy, electronegativity, metallic character, and reactivity. You’ll receive a knowledge score with a clear result band. The quiz is quick to complete, designed for students, and requires no sign-up.

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